@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/penal_systems>
  skos:prefLabel "penal systems"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/prison_ships> .

<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/prison_ships> .

<https://concepts.sagepub.com/social-science/concept/history_of_prisons>
  skos:prefLabel "history of prisons"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/prison_ships> .

<https://concepts.sagepub.com/social-science/concept/prison_ships>
  skos:definition "Prison ships are decommissioned ships (usually warships or barges) that have been refitted to accommodate inmates serving a period of incarceration. The ships may be moored offshore and/or adjacent to a land-based prison or military establishment. [Source: <a href=\"https://sk.sagepub.com/reference/prisons/n281.xml\" target=\"_blank\" data-id=\"to-sk\">Encyclopedia of Prisons &amp; Correctional Facilities; Prison Ships</a>]"@en ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/penal_systems>, <https://concepts.sagepub.com/social-science/concept/history_of_prisons> ;
  skos:prefLabel "prison ships"@en ;
  a skos:Concept .