Work in progress

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    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:j.0="http://qudt.org/schema/qudt/"
    xmlns:j.1="http://purl.org/dc/terms/"
    xmlns:owl="http://www.w3.org/2002/07/owl#"
    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/unit/PSI-PER-PSI">
    <j.0:applicableSystem rdf:resource="http://qudt.org/vocab/sou/IMPERIAL"/>
    <j.0:hasQuantityKind rdf:resource="http://qudt.org/vocab/quantitykind/PressureRatio"/>
    <j.0:symbol>psi/psi</j.0:symbol>
    <j.0:hasDimensionVector rdf:resource="http://qudt.org/vocab/dimensionvector/A0E0L0I0M0H0T0D1"/>
    <rdfs:label xml:lang="en">Psi per Psi</rdfs:label>
    <j.0:uneceCommonCode>L52</j.0:uneceCommonCode>
    <j.1:description rdf:datatype="http://www.w3.org/1999/02/22-rdf-syntax-ns#HTML">composed unit for pressure (pound-force per square inch) divided by the composed unit for pressure (pound-force per square inch)</j.1:description>
    <j.0:ucumCode rdf:datatype="http://qudt.org/schema/qudt/UCUMcs">[psi].[psi]-1</j.0:ucumCode>
    <rdf:type rdf:resource="http://qudt.org/schema/qudt/Unit"/>
    <j.0:plainTextDescription>composed unit for pressure (pound-force per square inch) divided by the composed unit for pressure (pound-force per square inch)</j.0:plainTextDescription>
    <j.0:conversionMultiplier rdf:datatype="http://www.w3.org/2001/XMLSchema#decimal">1.0</j.0:conversionMultiplier>
    <j.0:iec61360Code>0112/2///62720#UAA951</j.0:iec61360Code>
    <j.0:applicableSystem rdf:resource="http://qudt.org/vocab/sou/USCS"/>
    <j.0:conversionMultiplierSN rdf:datatype="http://www.w3.org/2001/XMLSchema#double">1.0E0</j.0:conversionMultiplierSN>
    <rdfs:isDefinedBy rdf:resource="http://qudt.org/2.1/vocab/unit"/>
  </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/unit/PSI-PER-PSI>
  rdf:type <http://qudt.org/schema/qudt/Unit> ;
  <http://purl.org/dc/terms/description> "composed unit for pressure (pound-force per square inch) divided by the composed unit for pressure (pound-force per square inch)"^^rdf:HTML ;
  <http://qudt.org/schema/qudt/applicableSystem> <http://qudt.org/vocab/sou/IMPERIAL> ;
  <http://qudt.org/schema/qudt/applicableSystem> <http://qudt.org/vocab/sou/USCS> ;
  <http://qudt.org/schema/qudt/conversionMultiplier> 1.0 ;
  <http://qudt.org/schema/qudt/conversionMultiplierSN> 1.0E0 ;
  <http://qudt.org/schema/qudt/hasDimensionVector> <http://qudt.org/vocab/dimensionvector/A0E0L0I0M0H0T0D1> ;
  <http://qudt.org/schema/qudt/hasQuantityKind> <http://qudt.org/vocab/quantitykind/PressureRatio> ;
  <http://qudt.org/schema/qudt/iec61360Code> "0112/2///62720#UAA951" ;
  <http://qudt.org/schema/qudt/plainTextDescription> "composed unit for pressure (pound-force per square inch) divided by the composed unit for pressure (pound-force per square inch)" ;
  <http://qudt.org/schema/qudt/symbol> "psi/psi" ;
  <http://qudt.org/schema/qudt/ucumCode> "[psi].[psi]-1"^^<http://qudt.org/schema/qudt/UCUMcs> ;
  <http://qudt.org/schema/qudt/uneceCommonCode> "L52" ;
  rdfs:isDefinedBy <http://qudt.org/2.1/vocab/unit> ;
  rdfs:label "Psi per Psi"@en ;
.

{"resource":"Psi per Psi" 
 ,"qname":"unit:PSI-PER-PSI" 
 ,"uri":"http:\/\/qudt.org\/vocab\/unit\/PSI-PER-PSI" 
 ,"properties":["applicable system":"sou:IMPERIAL" 
    ,"applicable system":"sou:USCS" 
    ,"conversion multiplier":"1.0" 
    ,"conversion multiplier scientific":"1.0E0" 
    ,"description":"composed unit for pressure (pound-force per square inch) divided by the composed unit for pressure (pound-force per square inch)" 
    ,"description (plain text)":"composed unit for pressure (pound-force per square inch) divided by the composed unit for pressure (pound-force per square inch)" 
    ,"has dimension vector":"dimension:A0E0L0I0M0H0T0D1" 
    ,"has quantity kind":"quantitykind:PressureRatio" 
    ,"iec-61360 code":"0112\/2\/\/\/62720#UAA951" 
    ,"isDefinedBy":"<http:\/\/qudt.org\/2.1\/vocab\/unit>" 
    ,"label":"Psi per Psi" 
    ,"symbol":"psi\/psi" 
    ,"type":"qudt:Unit" 
    ,"ucum code":"[psi].[psi]-1" 
    ,"unece common code":"L52" 
    ]}

{
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  "@type" : "http://qudt.org/schema/qudt/Unit",
  "description" : "composed unit for pressure (pound-force per square inch) divided by the composed unit for pressure (pound-force per square inch)",
  "applicableSystem" : [ "http://qudt.org/vocab/sou/IMPERIAL", "http://qudt.org/vocab/sou/USCS" ],
  "conversionMultiplier" : "1.0",
  "conversionMultiplier:SN" : 1.0,
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  "plainTextDescription" : "composed unit for pressure (pound-force per square inch) divided by the composed unit for pressure (pound-force per square inch)",
  "symbol" : "psi/psi",
  "ucumCode" : "[psi].[psi]-1",
  "uneceCommonCode" : "L52",
  "isDefinedBy" : "http://qudt.org/2.1/vocab/unit",
  "label" : {
    "@language" : "en",
    "@value" : "Psi per Psi"
  },
  "@context" : {
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      "@id" : "http://qudt.org/schema/qudt/applicableSystem",
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    },
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    "label" : {
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    },
    "uneceCommonCode" : {
      "@id" : "http://qudt.org/schema/qudt/uneceCommonCode"
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    "description" : {
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    },
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    "conversionMultiplier" : {
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    "iec61360Code" : {
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}