About: http://webisa.webdatacommons.org/43274492

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Nightmares can be caused by many factors including illness, anxiety, any traumatic event such as the loss of a loved one, or negative reactions to a medication.
http://www.w3.org/ns/prov#wasQuotedFrom	clevelandclinic.org