Work in progress

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    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
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    xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="http://qudt.org/vocab/quantitykind/GroupSpeedOfSound">
    <j.3:broader rdf:resource="http://qudt.org/vocab/quantitykind/SpeedOfSound"/>
    <rdfs:isDefinedBy rdf:resource="http://qudt.org/2.1/vocab/quantitykind"/>
    <rdfs:label xml:lang="en">Group Speed of Sound</rdfs:label>
    <j.0:plainTextDescription>In a dispersive medium sound speed is a function of sound frequency, through the dispersion relation. The spatial and temporal distribution of a propagating disturbance will continually change. The group speed of sound describes the propagation of the disturbance.</j.0:plainTextDescription>
    <j.0:latexDefinition rdf:datatype="http://qudt.org/schema/qudt/LatexString">$c_g = \frac{d\omega}{dk}$, where $\omega$ is the angular frequency and $k$ is angular wavenumber.</j.0:latexDefinition>
    <j.0:symbol>c</j.0:symbol>
    <j.0:hasDimensionVector rdf:resource="http://qudt.org/vocab/dimensionvector/A0E0L1I0M0H0T-1D0"/>
    <j.2:todo>belongs to SOQ-ISO</j.2:todo>
    <j.1:description rdf:datatype="http://qudt.org/schema/qudt/LatexString">In a dispersive medium sound speed is a function of sound frequency, through the dispersion relation. The spatial and temporal distribution of a propagating disturbance will continually change. The group speed of sound describes the propagation of the disturbance.</j.1:description>
    <j.0:applicableUnit rdf:resource="http://qudt.org/vocab/unit/KiloHZ-M"/>
    <j.0:applicableUnit rdf:resource="http://qudt.org/vocab/unit/GigaHZ-M"/>
    <j.0:informativeReference rdf:datatype="http://www.w3.org/2001/XMLSchema#anyURI">http://en.wikipedia.org/wiki/Speed_of_sound</j.0:informativeReference>
    <rdf:type rdf:resource="http://qudt.org/schema/qudt/QuantityKind"/>
    <rdfs:comment>Applicable units are those of quantitykind:GroupSpeedOfSound</rdfs:comment>
  </rdf:Description>
</rdf:RDF>

@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<http://qudt.org/vocab/quantitykind/GroupSpeedOfSound>
  rdf:type <http://qudt.org/schema/qudt/QuantityKind> ;
  <http://purl.org/dc/terms/description> "In a dispersive medium sound speed is a function of sound frequency, through the dispersion relation. The spatial and temporal distribution of a propagating disturbance will continually change. The group speed of sound describes the propagation of the disturbance."^^<http://qudt.org/schema/qudt/LatexString> ;
  <http://qudt.org/schema/qudt/applicableUnit> <http://qudt.org/vocab/unit/GigaHZ-M> ;
  <http://qudt.org/schema/qudt/applicableUnit> <http://qudt.org/vocab/unit/KiloHZ-M> ;
  <http://qudt.org/schema/qudt/hasDimensionVector> <http://qudt.org/vocab/dimensionvector/A0E0L1I0M0H0T-1D0> ;
  <http://qudt.org/schema/qudt/informativeReference> "http://en.wikipedia.org/wiki/Speed_of_sound"^^xsd:anyURI ;
  <http://qudt.org/schema/qudt/latexDefinition> "$c_g = \\frac{d\\omega}{dk}$, where $\\omega$ is the angular frequency and $k$ is angular wavenumber."^^<http://qudt.org/schema/qudt/LatexString> ;
  <http://qudt.org/schema/qudt/plainTextDescription> "In a dispersive medium sound speed is a function of sound frequency, through the dispersion relation. The spatial and temporal distribution of a propagating disturbance will continually change. The group speed of sound describes the propagation of the disturbance." ;
  <http://qudt.org/schema/qudt/symbol> "c" ;
  <http://www.linkedmodel.org/schema/vaem#todo> "belongs to SOQ-ISO" ;
  rdfs:comment "Applicable units are those of quantitykind:GroupSpeedOfSound" ;
  rdfs:isDefinedBy <http://qudt.org/2.1/vocab/quantitykind> ;
  rdfs:label "Group Speed of Sound"@en ;
  <http://www.w3.org/2004/02/skos/core#broader> <http://qudt.org/vocab/quantitykind/SpeedOfSound> ;
.

{"resource":"Group Speed of Sound" 
 ,"qname":"quantitykind:GroupSpeedOfSound" 
 ,"uri":"http:\/\/qudt.org\/vocab\/quantitykind\/GroupSpeedOfSound" 
 ,"properties":["applicable unit":"unit:GigaHZ-M" 
    ,"applicable unit":"unit:KiloHZ-M" 
    ,"comment":"Applicable units are those of quantitykind:GroupSpeedOfSound" 
    ,"description":"In a dispersive medium sound speed is a function of sound frequency, through the dispersion relation. The spatial and temporal distribution of a propagating disturbance will continually change. The group speed of sound describes the propagation of the disturbance." 
    ,"description (plain text)":"In a dispersive medium sound speed is a function of sound frequency, through the dispersion relation. The spatial and temporal distribution of a propagating disturbance will continually change. The group speed of sound describes the propagation of the disturbance." 
    ,"has broader":"quantitykind:SpeedOfSound" 
    ,"has dimension vector":"dimension:A0E0L1I0M0H0T-1D0" 
    ,"informative reference":"http:\/\/en.wikipedia.org\/wiki\/Speed_of_sound" 
    ,"isDefinedBy":"<http:\/\/qudt.org\/2.1\/vocab\/quantitykind>" 
    ,"label":"Group Speed of Sound" 
    ,"latex definition":"$c_g = \\frac{d\\omega}{dk}$, where $\\omega$ is the angular frequency and $k$ is angular wavenumber." 
    ,"symbol":"c" 
    ,"todo":"belongs to SOQ-ISO" 
    ,"type":"qudt:QuantityKind" 
    ]}

{
  "@id" : "http://qudt.org/vocab/quantitykind/GroupSpeedOfSound",
  "@type" : "http://qudt.org/schema/qudt/QuantityKind",
  "description" : "In a dispersive medium sound speed is a function of sound frequency, through the dispersion relation. The spatial and temporal distribution of a propagating disturbance will continually change. The group speed of sound describes the propagation of the disturbance.",
  "applicableUnit" : [ "http://qudt.org/vocab/unit/KiloHZ-M", "http://qudt.org/vocab/unit/GigaHZ-M" ],
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  "latexDefinition" : "$c_g = \\frac{d\\omega}{dk}$, where $\\omega$ is the angular frequency and $k$ is angular wavenumber.",
  "plainTextDescription" : "In a dispersive medium sound speed is a function of sound frequency, through the dispersion relation. The spatial and temporal distribution of a propagating disturbance will continually change. The group speed of sound describes the propagation of the disturbance.",
  "symbol" : "c",
  "todo" : "belongs to SOQ-ISO",
  "comment" : "Applicable units are those of quantitykind:GroupSpeedOfSound",
  "isDefinedBy" : "http://qudt.org/2.1/vocab/quantitykind",
  "label" : {
    "@language" : "en",
    "@value" : "Group Speed of Sound"
  },
  "broader" : "http://qudt.org/vocab/quantitykind/SpeedOfSound",
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