@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix isothes: <http://purl.org/iso25964/skos-thes#> .

<https://concepts.sagepub.com/social-science/concept/morphine>
  skos:definition "Morphine is a potent narcotic drug that directly affects the central nervous system. It is one of the main alkaloids extracted from the opium poppy. [Source: <a href=\"https://sk.sagepub.com/reference/drugpolicy/n234.xml\" target=\"_blank\" data-id=\"to-sk\">Encyclopedia of Drug Policy; Morphine</a>]"@en ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/types_of_drugs>, <https://concepts.sagepub.com/social-science/concept/opiates>, <https://concepts.sagepub.com/social-science/concept/drug_classification> ;
  skos:prefLabel "morphine"@en ;
  a skos:Concept .

<https://concepts.sagepub.com/social-science/concept/drug_classification>
  skos:prefLabel "drug classification"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/morphine> .

<https://concepts.sagepub.com/social-science/concept/types_of_drugs>
  skos:prefLabel "types of drugs"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/morphine> .

<https://concepts.sagepub.com/social-science/concept/conceptgroup/concepts>
  a skos:Collection, isothes:ConceptGroup ;
  skos:prefLabel "concepts"@en ;
  skos:member <https://concepts.sagepub.com/social-science/concept/morphine> .

<https://concepts.sagepub.com/social-science/concept/opiates>
  skos:prefLabel "opiates"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/morphine> .