@prefix qudt:  <http://qudt.org/schema/qudt#> .
@prefix ssd:   <http://www.w3.org/ns/sparql-service-description#> .
@prefix owl:   <http://www.w3.org/2002/07/owl#> .
@prefix xsd:   <http://www.w3.org/2001/XMLSchema#> .
@prefix skos:  <http://www.w3.org/2004/02/skos/core#> .
@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> .
@prefix qudt-unit: <http://qudt.org/vocab/unit#> .
@prefix qb:    <http://purl.org/linked-data/cube#> .
@prefix dgu:   <http://reference.data.gov.uk/def/reference/> .
@prefix ui:    <http://purl.org/linked-data/registry-ui#> .
@prefix dct:   <http://purl.org/dc/terms/> .
@prefix reg:   <http://purl.org/linked-data/registry#> .
@prefix qudt-quantity: <http://qudt.org/vocab/quantity#> .
@prefix grib2-parameter: <http://codes.wmo.int/grib2/schema/parameter/> .
@prefix api:   <http://purl.org/linked-data/api/vocab#> .
@prefix vann:  <http://purl.org/vocab/vann/> .
@prefix prov:  <http://www.w3.org/ns/prov#> .
@prefix foaf:  <http://xmlns.com/foaf/0.1/> .
@prefix common-unit: <http://codes.wmo.int/common/schema/unit/> .
@prefix cc:    <http://creativecommons.org/ns#> .
@prefix grib2-core: <http://codes.wmo.int/grib2/schema/core/> .
@prefix void:  <http://rdfs.org/ns/void#> .
@prefix version: <http://purl.org/linked-data/version#> .
@prefix bufr4-core: <http://codes.wmo.int/bufr4/schema/core/> .
@prefix rdf:   <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix ldp:   <http://www.w3.org/ns/ldp#> .
@prefix time:  <http://www.w3.org/2006/time#> .
@prefix qudt-dimension: <http://qudt.org/vocab/dimension#> .
@prefix vs:    <http://www.w3.org/2003/06/sw-vocab-status/ns#> .
@prefix common-core: <http://codes.wmo.int/common/schema/core/> .
@prefix dc:    <http://purl.org/dc/elements/1.1/> .

<http://codes.wmo.int/wmdr/ReferenceTime/_timeServer>
        a                  reg:RegisterItem ;
        rdfs:label         "Time server (internet based)" ;
        dct:dateAccepted   "2020-04-29T14:26:23.457Z"^^xsd:dateTime , "2020-04-29T14:25:46.374Z"^^xsd:dateTime ;
        dct:dateSubmitted  "2019-10-14T16:36:39.541Z"^^xsd:dateTime ;
        dct:description    "A server computer that reads the actual time from a reference/atomic clock and distributes this information to its clients using a computer network. The time server may be a local network time server or an internet time server."@en ;
        reg:definition     [ reg:entity       <http://codes.wmo.int/wmdr/ReferenceTime/timeServer> ;
                             reg:sourceGraph  <http://codes.wmo.int/wmdr/ReferenceTime/_timeServer:1#graph>
                           ] ;
        reg:itemClass      skos:Concept ;
        reg:notation       "timeServer" ;
        reg:register       <http://codes.wmo.int/wmdr/ReferenceTime> ;
        reg:status         reg:statusStable ;
        reg:submitter      [ foaf:accountName  "https://api.github.com/users/kurt-hectic" ;
                             foaf:name         "kurt-hectic"
                           ] ;
        owl:versionInfo    3 .

<http://codes.wmo.int/wmdr/_ReferenceTime>
        a                  reg:RegisterItem ;
        rdfs:label         "Reference time" ;
        dct:dateAccepted   "2020-04-29T14:36:19.871Z"^^xsd:dateTime ;
        dct:dateSubmitted  "2019-10-14T16:36:39.537Z"^^xsd:dateTime ;
        dct:description    "Reference time" ;
        dct:modified       "2019-11-21T09:14:29.877Z"^^xsd:dateTime ;
        reg:definition     [ reg:entity         <http://codes.wmo.int/wmdr/ReferenceTime> ;
                             reg:entityVersion  <http://codes.wmo.int/wmdr/ReferenceTime:2>
                           ] ;
        reg:itemClass      ldp:Container , reg:Register , skos:Collection ;
        reg:notation       "ReferenceTime" ;
        reg:register       <http://codes.wmo.int/wmdr> ;
        reg:status         reg:statusStable ;
        reg:submitter      [ foaf:accountName  "https://api.github.com/users/kurt-hectic" ;
                             foaf:name         "kurt-hectic"
                           ] ;
        owl:versionInfo    3 .

<http://codes.wmo.int/wmdr/ReferenceTime/_gnss>
        a                  reg:RegisterItem ;
        rdfs:label         "Global navigation satellite system (GNSS)" ;
        dct:dateAccepted   "2020-04-29T14:26:23.455Z"^^xsd:dateTime , "2020-04-29T14:25:46.37Z"^^xsd:dateTime ;
        dct:dateSubmitted  "2019-10-14T16:36:39.545Z"^^xsd:dateTime ;
        dct:description    "A Global Navigation Satellite System (GNSS) signal controlled clock, which receives a signal that comes from the atomic clock of a GNSS constellation of satellites."@en ;
        reg:definition     [ reg:entity       <http://codes.wmo.int/wmdr/ReferenceTime/gnss> ;
                             reg:sourceGraph  <http://codes.wmo.int/wmdr/ReferenceTime/_gnss:1#graph>
                           ] ;
        reg:itemClass      skos:Concept ;
        reg:notation       "gnss" ;
        reg:register       <http://codes.wmo.int/wmdr/ReferenceTime> ;
        reg:status         reg:statusStable ;
        reg:submitter      [ foaf:accountName  "https://api.github.com/users/kurt-hectic" ;
                             foaf:name         "kurt-hectic"
                           ] ;
        owl:versionInfo    3 .

<http://codes.wmo.int/wmdr/ReferenceTime/inapplicable>
        a                skos:Concept ;
        rdfs:label       "inapplicable" ;
        dct:description  "None of the codes in the table are applicable in the context of this particular observation."@en ;
        skos:notation    "inapplicable" .

<http://codes.wmo.int/wmdr/ReferenceTime/radioClock>
        a                skos:Concept ;
        rdfs:label       "Radio clock" ;
        dct:description  "A radio controlled clock, which receives a radio signal that comes from a reference/atomic clock."@en ;
        skos:notation    "radioClock" .

<http://codes.wmo.int/wmdr/ReferenceTime/timeServer>
        a                skos:Concept ;
        rdfs:label       "Time server (internet based)" ;
        dct:description  "A server computer that reads the actual time from a reference/atomic clock and distributes this information to its clients using a computer network. The time server may be a local network time server or an internet time server."@en ;
        skos:notation    "timeServer" .

<http://codes.wmo.int/wmdr/ReferenceTime>
        a                      ldp:Container , reg:Register , skos:Collection ;
        rdfs:label             "Reference time" ;
        dct:description        "Reference time" ;
        dct:modified           "2019-11-21T09:14:29.877Z"^^xsd:dateTime ;
        owl:versionInfo        2 ;
        skos:member            <http://codes.wmo.int/wmdr/ReferenceTime/timeServer> , <http://codes.wmo.int/wmdr/ReferenceTime/manualComparison> , <http://codes.wmo.int/wmdr/ReferenceTime/radioClock> , <http://codes.wmo.int/wmdr/ReferenceTime/inapplicable> , <http://codes.wmo.int/wmdr/ReferenceTime/unknown> , <http://codes.wmo.int/wmdr/ReferenceTime/gnss> ;
        ldp:hasMemberRelation  skos:member .

<http://codes.wmo.int/wmdr/ReferenceTime/manualComparison>
        a                skos:Concept ;
        rdfs:label       "Manual comparison" ;
        dct:description  "A regular procedure of manual comparison with a reference clock"@en ;
        skos:notation    "manualComparison" .

<http://codes.wmo.int/wmdr/ReferenceTime/_inapplicable>
        a                  reg:RegisterItem ;
        rdfs:label         "inapplicable" ;
        dct:dateAccepted   "2020-04-29T14:26:23.456Z"^^xsd:dateTime , "2020-04-29T14:25:46.372Z"^^xsd:dateTime ;
        dct:dateSubmitted  "2019-10-14T16:36:39.543Z"^^xsd:dateTime ;
        dct:description    "None of the codes in the table are applicable in the context of this particular observation."@en ;
        reg:definition     [ reg:entity       <http://codes.wmo.int/wmdr/ReferenceTime/inapplicable> ;
                             reg:sourceGraph  <http://codes.wmo.int/wmdr/ReferenceTime/_inapplicable:1#graph>
                           ] ;
        reg:itemClass      skos:Concept ;
        reg:notation       "inapplicable" ;
        reg:register       <http://codes.wmo.int/wmdr/ReferenceTime> ;
        reg:status         reg:statusStable ;
        reg:submitter      [ foaf:accountName  "https://api.github.com/users/kurt-hectic" ;
                             foaf:name         "kurt-hectic"
                           ] ;
        owl:versionInfo    3 .

<http://codes.wmo.int/wmdr/ReferenceTime/unknown>
        a                skos:Concept ;
        rdfs:label       "unknown" ;
        dct:description  "Source of reference time unknown"@en ;
        skos:notation    "unknown" .

<http://codes.wmo.int/wmdr/ReferenceTime/_unknown>
        a                  reg:RegisterItem ;
        rdfs:label         "unknown" ;
        dct:dateAccepted   "2020-04-29T14:25:46.375Z"^^xsd:dateTime , "2020-04-29T14:26:23.458Z"^^xsd:dateTime ;
        dct:dateSubmitted  "2019-10-14T16:36:39.54Z"^^xsd:dateTime ;
        dct:description    "Source of reference time unknown"@en ;
        reg:definition     [ reg:entity       <http://codes.wmo.int/wmdr/ReferenceTime/unknown> ;
                             reg:sourceGraph  <http://codes.wmo.int/wmdr/ReferenceTime/_unknown:1#graph>
                           ] ;
        reg:itemClass      skos:Concept ;
        reg:notation       "unknown" ;
        reg:register       <http://codes.wmo.int/wmdr/ReferenceTime> ;
        reg:status         reg:statusStable ;
        reg:submitter      [ foaf:accountName  "https://api.github.com/users/kurt-hectic" ;
                             foaf:name         "kurt-hectic"
                           ] ;
        owl:versionInfo    3 .

<http://codes.wmo.int/wmdr/ReferenceTime/_radioClock>
        a                  reg:RegisterItem ;
        rdfs:label         "Radio clock" ;
        dct:dateAccepted   "2020-04-29T14:25:46.374Z"^^xsd:dateTime , "2020-04-29T14:26:23.457Z"^^xsd:dateTime ;
        dct:dateSubmitted  "2019-10-14T16:36:39.542Z"^^xsd:dateTime ;
        dct:description    "A radio controlled clock, which receives a radio signal that comes from a reference/atomic clock."@en ;
        reg:definition     [ reg:entity       <http://codes.wmo.int/wmdr/ReferenceTime/radioClock> ;
                             reg:sourceGraph  <http://codes.wmo.int/wmdr/ReferenceTime/_radioClock:1#graph>
                           ] ;
        reg:itemClass      skos:Concept ;
        reg:notation       "radioClock" ;
        reg:register       <http://codes.wmo.int/wmdr/ReferenceTime> ;
        reg:status         reg:statusStable ;
        reg:submitter      [ foaf:accountName  "https://api.github.com/users/kurt-hectic" ;
                             foaf:name         "kurt-hectic"
                           ] ;
        owl:versionInfo    3 .

<http://codes.wmo.int/wmdr/ReferenceTime/_manualComparison>
        a                  reg:RegisterItem ;
        rdfs:label         "Manual comparison" ;
        dct:dateAccepted   "2020-04-29T14:26:23.456Z"^^xsd:dateTime , "2020-04-29T14:25:46.373Z"^^xsd:dateTime ;
        dct:dateSubmitted  "2019-10-14T16:36:39.542Z"^^xsd:dateTime ;
        dct:description    "A regular procedure of manual comparison with a reference clock"@en ;
        reg:definition     [ reg:entity       <http://codes.wmo.int/wmdr/ReferenceTime/manualComparison> ;
                             reg:sourceGraph  <http://codes.wmo.int/wmdr/ReferenceTime/_manualComparison:1#graph>
                           ] ;
        reg:itemClass      skos:Concept ;
        reg:notation       "manualComparison" ;
        reg:register       <http://codes.wmo.int/wmdr/ReferenceTime> ;
        reg:status         reg:statusStable ;
        reg:submitter      [ foaf:accountName  "https://api.github.com/users/kurt-hectic" ;
                             foaf:name         "kurt-hectic"
                           ] ;
        owl:versionInfo    3 .

<http://codes.wmo.int/wmdr/ReferenceTime/gnss>
        a                skos:Concept ;
        rdfs:label       "Global navigation satellite system (GNSS)" ;
        dct:description  "A Global Navigation Satellite System (GNSS) signal controlled clock, which receives a signal that comes from the atomic clock of a GNSS constellation of satellites."@en ;
        skos:notation    "gnss" .