About: http://webisa.webdatacommons.org/44285376

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 is often an early sign, with or without other symptoms such as joint pain, difficulty chewing, fever, blurred vision, weakness and weight loss.
http://www.w3.org/ns/prov#wasQuotedFrom	headache-help.org