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

nalt:8456
  a <https://lod.nal.usda.gov/naltv#Chemical>, skos:Concept ;
  skos:broader nalt:1390, nalt:34676, nalt:2318 ;
  skos:inScheme <https://lod.nal.usda.gov/nalt>, <https://lod.nal.usda.gov/nalt-awic> ;
  skos:prefLabel "methadone"@en, "metadona"@es ;
  dc:created "2006-01-19"^^xsd:date ;
  ns0:marc001 "23180" ;
  dc:modified "2012-11-30"^^xsd:date .

ns0:Chemical
  rdfs:label "Chemical"@en ;
  a owl:Class .

nalt:1390
  skos:prefLabel "cetonas"@es, "ketones"@en ;
  a ns0:Chemical, skos:Concept ;
  skos:narrower nalt:8456 .

nalt:2318
  skos:prefLabel "analgésicos"@es, "analgesics"@en ;
  a ns0:Chemical, skos:Concept ;
  skos:narrower nalt:8456 .

<https://lod.nal.usda.gov/nalt>
  rdfs:label "NALT Full"@en ;
  a skos:ConceptScheme .

nalt:34676
  skos:prefLabel "narcóticos"@es, "narcotics"@en ;
  a ns0:Chemical, skos:Concept ;
  skos:narrower nalt:8456 .