@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 agrovoc: <http://aims.fao.org/aos/agrovoc/> .
@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:57483
  a skos:Concept, <https://lod.nal.usda.gov/naltv#Chemical> ;
  dc:created "2006-01-19"^^xsd:date ;
  dc:modified "2017-01-24"^^xsd:date ;
  skos:broader nalt:15964 ;
  skos:exactMatch agrovoc:c_24125, <http://id.cabi.org/cabt/87455>, <http://id.loc.gov/authorities/subjects/sh85099978>, <http://id.agrisemantics.org/gacs/C20885> ;
  skos:inScheme <https://lod.nal.usda.gov/nalt>, <https://lod.nal.usda.gov/nalt-core> ;
  skos:prefLabel "perlite"@en, "perlita"@es ;
  skos:related nalt:290602, nalt:56445, nalt:7271 ;
  ns0:marc001 "27821" .

nalt:7271
  a ns0:Chemical, skos:Concept ;
  skos:prefLabel "óxido de aluminio"@es, "aluminum oxide"@en ;
  skos:related nalt:57483 .

nalt:15964
  a ns0:Topic, skos:Concept ;
  skos:narrower nalt:57483 ;
  skos:prefLabel "volcanic rocks"@en, "rocas volcánicas"@es .

nalt:56445
  a ns0:Chemical, skos:Concept ;
  skos:prefLabel "sílice"@es, "silica"@en ;
  skos:related nalt:57483 .

nalt:290602
  a ns0:Topic, skos:Concept ;
  skos:prefLabel "lana mineral"@es, "rockwool"@en ;
  skos:related nalt:57483 .