About: http://webisa.webdatacommons.org/374599383

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	Psychiatrists normally define major depression as including 5 or more of the following 9 symptoms, lasting two weeks or more (1):
http://www.w3.org/ns/prov#wasQuotedFrom	fightingdepression.co.uk