@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<http://www.irandoc.acir/onto/irandoc/NEMA0002558>
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0002559>, <http://www.irandoc.acir/onto/irandoc/NEMA0002557> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/NEMA0002565> ;
  skos:prefLabel "سنگ‌های بلورین"@fa, "crystalline rocks"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/NEMA0002557>
  skos:prefLabel "سنگ‌های آذرین"@fa, "igneous rocks"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0002558> .

<http://www.irandoc.acir/onto/irandoc/NEMA0002565>
  skos:prefLabel "rocks"@en, "سنگ‌ها"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/NEMA0002558> .

<http://www.irandoc.acir/onto/irandoc/NEMA0002559>
  skos:prefLabel "سنگ‌های دگرگونی"@fa, "metamorphic rocks"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0002558> .