About: http://webisa.webdatacommons.org/185998469

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	Headaches that persistently occur on the same side are often secondary headaches associated with conditions such as brain tumors or arteriovenous malformations (abnormal clusters of blood vessels in the brain).
http://www.w3.org/ns/prov#wasQuotedFrom	rocketmarket.com