@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix nalt: <https://lod.nal.usda.gov/nalt/> .
@prefix dc: <http://purl.org/dc/terms/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix ns0: <https://lod.nal.usda.gov/naltv#> .

<https://lod.nal.usda.gov/naltv#marc001> rdfs:label "Field 001 in MARC Authority Format"@en .
<https://lod.nal.usda.gov/nalt>
  a skos:ConceptScheme ;
  rdfs:label "NALT Full"@en .

<https://lod.nal.usda.gov/naltv#Chemical>
  a owl:Class ;
  rdfs:label "Chemical"@en .

nalt:20720
  a <https://lod.nal.usda.gov/naltv#Chemical>, skos:Concept ;
  dc:created "2006-01-19"^^xsd:date ;
  dc:modified "2018-01-16"^^xsd:date ;
  skos:altLabel "oxaloacetate"@en, "oxalacetic acid"@en ;
  skos:broader nalt:2369, nalt:4217 ;
  skos:inScheme <https://lod.nal.usda.gov/nalt> ;
  skos:prefLabel "oxaloacetic acid"@en, "ácido oxaloacético"@es ;
  skos:related nalt:17284 ;
  ns0:marc001 "26660" .

nalt:17284
  a ns0:Topic, skos:Concept ;
  skos:prefLabel "fotosíntesis C4"@es, "C4 photosynthesis"@en ;
  skos:related nalt:20720 .

nalt:2369
  a ns0:Chemical, skos:Concept ;
  skos:narrower nalt:20720 ;
  skos:prefLabel "cetoácidos"@es, "keto acids"@en .

nalt:4217
  a ns0:Chemical, skos:Concept ;
  skos:narrower nalt:20720 ;
  skos:prefLabel "dicarboxylic acids"@en, "ácidos dicarboxílicos"@es .