About: http://webisa.webdatacommons.org/284092632

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	They are one of the most common physical complaints that prompt people to treat themselves or seek professional assistance.Simply defined, a headache is a pain in the head due to some cause.
http://www.w3.org/ns/prov#wasQuotedFrom	chinalifeweb.com