Work in progress

<rdf:RDF
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:j.0="http://qudt.org/schema/qudt/"
    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/constant/Value_PermittivityOfVacuum">
    <rdf:type rdf:resource="http://qudt.org/schema/qudt/ConstantValue"/>
    <j.0:hasUnit rdf:resource="http://qudt.org/vocab/unit/FARAD-PER-M"/>
    <j.0:relativeStandardUncertainty rdf:datatype="http://www.w3.org/2001/XMLSchema#double">1.5e-10</j.0:relativeStandardUncertainty>
    <j.0:value rdf:datatype="http://www.w3.org/2001/XMLSchema#decimal">0.0000000000068541878128</j.0:value>
    <j.0:valueSN rdf:datatype="http://www.w3.org/2001/XMLSchema#double">6.8541878128E-12</j.0:valueSN>
    <rdfs:isDefinedBy rdf:resource="http://qudt.org/3.1.0/vocab/constant"/>
    <rdfs:label>Value for permittivity of vacuum</rdfs:label>
  </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/constant/Value_PermittivityOfVacuum>
  rdf:type <http://qudt.org/schema/qudt/ConstantValue> ;
  <http://qudt.org/schema/qudt/hasUnit> <http://qudt.org/vocab/unit/FARAD-PER-M> ;
  <http://qudt.org/schema/qudt/relativeStandardUncertainty> 1.5e-10 ;
  <http://qudt.org/schema/qudt/value> 0.0000000000068541878128 ;
  <http://qudt.org/schema/qudt/valueSN> 6.8541878128E-12 ;
  rdfs:isDefinedBy <http://qudt.org/3.1.0/vocab/constant> ;
  rdfs:label "Value for permittivity of vacuum" ;
.

{"resource":"Value for permittivity of vacuum" 
 ,"qname":"constant:Value_PermittivityOfVacuum" 
 ,"uri":"http:\/\/qudt.org\/vocab\/constant\/Value_PermittivityOfVacuum" 
 ,"properties":["has unit":"unit:FARAD-PER-M" 
    ,"isDefinedBy":"<http:\/\/qudt.org\/3.1.0\/vocab\/constant>" 
    ,"label":"Value for permittivity of vacuum" 
    ,"relative standard uncertainty":"1.5e-10" 
    ,"type":"qudt:ConstantValue" 
    ,"value":"0.0000000000068541878128" 
    ,"value scientific":"6.8541878128E-12" 
    ]}

{
  "@id" : "http://qudt.org/vocab/constant/Value_PermittivityOfVacuum",
  "@type" : "http://qudt.org/schema/qudt/ConstantValue",
  "hasUnit" : "http://qudt.org/vocab/unit/FARAD-PER-M",
  "http://qudt.org/schema/qudt/relativeStandardUncertainty" : 1.5E-10,
  "value" : "0.0000000000068541878128",
  "value:SN" : 6.8541878128E-12,
  "isDefinedBy" : "http://qudt.org/3.1.0/vocab/constant",
  "label" : "Value for permittivity of vacuum",
  "@context" : {
    "hasUnit" : {
      "@id" : "http://qudt.org/schema/qudt/hasUnit",
      "@type" : "@id"
    },
    "relativeStandardUncertainty" : {
      "@id" : "http://qudt.org/schema/qudt/relativeStandardUncertainty",
      "@type" : "http://www.w3.org/2001/XMLSchema#double"
    },
    "value" : {
      "@id" : "http://qudt.org/schema/qudt/value",
      "@type" : "http://www.w3.org/2001/XMLSchema#decimal"
    },
    "valueSN" : {
      "@id" : "http://qudt.org/schema/qudt/valueSN",
      "@type" : "http://www.w3.org/2001/XMLSchema#double"
    },
    "isDefinedBy" : {
      "@id" : "http://www.w3.org/2000/01/rdf-schema#isDefinedBy",
      "@type" : "@id"
    },
    "label" : {
      "@id" : "http://www.w3.org/2000/01/rdf-schema#label"
    },
    "rdf" : "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
    "owl" : "http://www.w3.org/2002/07/owl#",
    "xsd" : "http://www.w3.org/2001/XMLSchema#",
    "rdfs" : "http://www.w3.org/2000/01/rdf-schema#"
  }
}