@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix nalt: <https://lod.nal.usda.gov/nalt/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix dc: <http://purl.org/dc/terms/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@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 .
nalt:56445_def
  a <https://lod.nal.usda.gov/naltv#Definition> ;
  rdf:value "Cristales transparentes insípidos que se hallan en la naturaleza, como el ágata, la amatista, la calcedonia, la cristobalita, el sílex, la arena, el cuarzo y la tridimita. El compuesto es insoluble en agua o ácidos, excepto en el ácido fluorhídrico."@es, "Transparent, tasteless crystals found in nature as agate, amethyst, chalcedony, cristobalite, flint, sand, quartz, and tridymite. The compound is insoluble in water or acids except hydrofluoric acid."@en ;
  dc:source "Medical Subject Headings 2017" .

<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:56445
  a skos:Concept, <https://lod.nal.usda.gov/naltv#Chemical> ;
  dc:created "2006-01-19"^^xsd:date ;
  dc:modified "2018-10-22"^^xsd:date ;
  skos:altLabel "silicon dioxide"@en, "cristobalite"@en ;
  skos:broader nalt:7279, nalt:292507 ;
  skos:definition nalt:56445_def ;
  skos:exactMatch agrovoc:c_14283, <http://id.cabi.org/cabt/106929>, <http://id.loc.gov/authorities/subjects/sh85122495>, <http://id.agrisemantics.org/gacs/C11345> ;
  skos:inScheme <https://lod.nal.usda.gov/nalt>, <https://lod.nal.usda.gov/nalt-core> ;
  skos:narrower nalt:56443, nalt:63087 ;
  skos:prefLabel "silica"@en, "sílice"@es ;
  skos:related nalt:306927, nalt:324480, nalt:55167, nalt:57483, nalt:12729, nalt:62338 ;
  ns0:marc001 "33894" .

nalt:292507
  a ns0:Chemical, skos:Concept ;
  skos:narrower nalt:56445 ;
  skos:prefLabel "compuestos de silicio"@es, "silicon compounds"@en .

nalt:306927
  a ns0:Topic, skos:Concept ;
  skos:prefLabel "duripán"@es, "duripans"@en ;
  skos:related nalt:56445 .

nalt:63087
  a ns0:Chemical, skos:Concept ;
  skos:broader nalt:56445 ;
  skos:prefLabel "gel de sílice"@es, "silica gel"@en .

nalt:324480
  a ns0:Topic, skos:Concept ;
  skos:prefLabel "acid insoluble lignin"@en, "lignina insoluble en ácido"@es ;
  skos:related nalt:56445 .

nalt:55167
  a ns0:Chemical, skos:Concept ;
  skos:prefLabel "silicio"@es, "silicon"@en ;
  skos:related nalt:56445 .

nalt:56443
  a ns0:Chemical, skos:Concept ;
  skos:broader nalt:56445 ;
  skos:prefLabel "cuarzo"@es, "quartz"@en .

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

nalt:12729
  a ns0:Topic, skos:Concept ;
  skos:prefLabel "minerales de silicato"@es, "silicate minerals"@en ;
  skos:related nalt:56445 .

nalt:7279
  a ns0:Chemical, skos:Concept ;
  skos:narrower nalt:56445 ;
  skos:prefLabel "óxidos"@es, "oxides"@en .

nalt:62338
  a ns0:Topic, skos:Concept ;
  skos:prefLabel "arena"@es, "sand"@en ;
  skos:related nalt:56445 .