@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/mental_disorders>
  skos:prefLabel "mental disorders"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/sleep_disorders> .

<https://concepts.sagepub.com/social-science/concept/sleep_deprivation>
  skos:prefLabel "sleep deprivation"@en ;
  a skos:Concept ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/sleep_disorders> .

<https://concepts.sagepub.com/social-science/concept/dyssomnias>
  skos:prefLabel "dyssomnias"@en ;
  a skos:Concept ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/sleep_disorders> .

<https://concepts.sagepub.com/social-science/concept/diseases_and_conditions>
  skos:prefLabel "diseases and conditions"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/sleep_disorders> .

<https://concepts.sagepub.com/social-science/concept/nervous_system_diseases>
  skos:prefLabel "nervous system diseases"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/sleep_disorders> .

<https://concepts.sagepub.com/social-science/concept/physical_and_mental_health>
  skos:prefLabel "physical and mental health"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/sleep_disorders> .

<https://concepts.sagepub.com/social-science/concept/parasomnias>
  skos:prefLabel "parasomnias"@en ;
  a skos:Concept ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/sleep_disorders> .

<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/sleep_disorders> .

<https://concepts.sagepub.com/social-science/concept/neurologic_manifestations>
  skos:prefLabel "neurologic manifestations"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/sleep_disorders> .

<https://concepts.sagepub.com/social-science/concept/sleep_disorders>
  skos:narrower <https://concepts.sagepub.com/social-science/concept/parasomnias>, <https://concepts.sagepub.com/social-science/concept/dyssomnias>, <https://concepts.sagepub.com/social-science/concept/insomnia>, <https://concepts.sagepub.com/social-science/concept/sleep_deprivation> ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/neurologic_manifestations>, <https://concepts.sagepub.com/social-science/concept/disability>, <https://concepts.sagepub.com/social-science/concept/mental_disorders>, <https://concepts.sagepub.com/social-science/concept/physical_and_mental_health>, <https://concepts.sagepub.com/social-science/concept/diseases_and_conditions>, <https://concepts.sagepub.com/social-science/concept/health_sciences>, <https://concepts.sagepub.com/social-science/concept/nervous_system_diseases> ;
  a skos:Concept ;
  skos:definition "“Sleep tight and sweet dreams” used to be the phrase used when bidding a family member good night. Unfortunately, a significant number of individuals have difficulty either falling asleep or staying asleep for the 7 to 8 hours recommended by the National Institutes of Health. [Source: <a href=\"https://sk.sagepub.com/reference/counseling/n128.xml\" target=\"_blank\" data-id=\"to-sk\">Encyclopedia of Counseling; Sleep Disorders</a>]"@en ;
  skos:exactMatch <https://id.nlm.nih.gov/mesh/D012893.html> ;
  skos:prefLabel "sleep disorders"@en .

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

<https://concepts.sagepub.com/social-science/concept/insomnia>
  skos:prefLabel "insomnia"@en ;
  a skos:Concept ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/sleep_disorders> .

<https://concepts.sagepub.com/social-science/concept/health_sciences>
  skos:prefLabel "health sciences"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/sleep_disorders> .