About: http://webisa.webdatacommons.org/29542572

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	One of 4 stroke events is preceded or followed by acute or subacute headache.10,11 Acute headache is more often associated with hemorrhagic than ischemic stroke events, and severe headache is a typical symptom of subarachnoid hemorrhage.
http://www.w3.org/ns/prov#wasQuotedFrom	jamanetwork.com