About: http://webisa.webdatacommons.org/354630429

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	Headache may also represent a primary problem with no other underlying condition, and examples of these are migraines, or other headache types carrying names like paroxysmal hemicrania or cluster headache.
http://www.w3.org/ns/prov#wasQuotedFrom	medhelp.org