PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • 8) The cause of bipolar disorder is unknown though studies have shown that it may be genetic, can be biochemical and possibly due to hormonal imbalances, and related to environmental factors such as stress and drug use.
http://www.w3.org/ns/prov#wasQuotedFrom
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