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

<https://concepts.sagepub.com/social-science/concept/controlled_drugs>
  skos:prefLabel "controlled drugs"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/crack> .

<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/crack> .

<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/crack> .

<https://concepts.sagepub.com/social-science/concept/crack>
  skos:definition "Crack is a form of cocaine that is made by mixing a salt form of cocaine (hydrochloride) with a base such as sodium bicarbonate (baking soda) to convert the salt form of the drug to the base form. This conversion produces a form of smokable cocaine. [Source: <a href=\"https://sk.sagepub.com/reference/drugpolicy/n81.xml\" target=\"_blank\" data-id=\"to-sk\">Encyclopedia of Drug Policy; Crack</a>]"@en ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/types_of_drugs>, <https://concepts.sagepub.com/social-science/concept/controlled_drugs>, <https://concepts.sagepub.com/social-science/concept/cocaine> ;
  skos:prefLabel "crack"@en ;
  a skos:Concept .