@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/randomized_controlled_trials>
  skos:prefLabel "randomized controlled trials"@en ;
  a skos:Concept ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/controlled_clinical_trials> .

<https://concepts.sagepub.com/social-science/concept/controlled_clinical_trials>
  skos:narrower <https://concepts.sagepub.com/social-science/concept/randomized_controlled_trials>, <https://concepts.sagepub.com/social-science/concept/randomized_clinical_trials> ;
  skos:exactMatch <https://id.nlm.nih.gov/mesh/D018849.html> ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/clinical_trials> ;
  skos:prefLabel "controlled clinical trials"@en ;
  a skos:Concept .

<https://concepts.sagepub.com/social-science/concept/randomized_clinical_trials>
  skos:prefLabel "randomized clinical trials"@en ;
  a skos:Concept ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/controlled_clinical_trials> .

<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/controlled_clinical_trials> .

<https://concepts.sagepub.com/social-science/concept/clinical_trials>
  skos:prefLabel "clinical trials"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/controlled_clinical_trials> .