@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:6424
  skos:prefLabel "estroncio"@es, "strontium"@en ;
  a <https://lod.nal.usda.gov/naltv#Chemical>, skos:Concept ;
  skos:broader nalt:6418 .

nalt:6418
  dc:created "2006-01-19"^^xsd:date ;
  skos:prefLabel "metales alcalinotérreos"@es, "alkaline earth metals"@en ;
  skos:exactMatch <http://id.agrisemantics.org/gacs/C32047>, <http://aims.fao.org/aos/agrovoc/c_266>, <http://id.cabi.org/cabt/8158>, <http://id.loc.gov/authorities/subjects/sh85003595> ;
  skos:narrower nalt:6423, nalt:6419, nalt:6420, nalt:6421, nalt:6424, nalt:6422 ;
  skos:inScheme <https://lod.nal.usda.gov/nalt-core>, <https://lod.nal.usda.gov/nalt> ;
  skos:broader nalt:6401 ;
  dc:modified "2014-08-18"^^xsd:date ;
  skos:hiddenLabel "alkaline earth metal"@en, "alkali-earth metal"@en, "alkali earth metals"@en, "alkaline-earth-metals"@en, "alkali earth metal"@en, "alkali-earth metals"@en ;
  a <https://lod.nal.usda.gov/naltv#Chemical>, skos:Concept ;
  ns0:marc001 "1704" .

nalt:6422
  skos:prefLabel "magnesio"@es, "magnesium"@en ;
  a ns0:Chemical, skos:Concept ;
  skos:broader nalt:6418 .

nalt:6420
  skos:prefLabel "berilio"@es, "beryllium"@en ;
  a ns0:Chemical, skos:Concept ;
  skos:broader nalt:6418 .

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

nalt:6419
  skos:prefLabel "bario"@es, "barium"@en ;
  a ns0:Chemical, skos:Concept ;
  skos:broader nalt:6418 .

nalt:6423
  skos:prefLabel "radio (elemento químico)"@es, "radium"@en ;
  a ns0:Chemical, skos:Concept ;
  skos:broader nalt:6418 .

nalt:6401
  skos:prefLabel "elementos metálicos"@es, "metallic elements"@en ;
  a ns0:Chemical, skos:Concept ;
  skos:narrower nalt:6418 .

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

nalt:6421
  skos:prefLabel "calcio"@es, "calcium"@en ;
  a ns0:Chemical, skos:Concept ;
  skos:broader nalt:6418 .