About: http://webisa.webdatacommons.org/364939723

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	Do you have other symptoms that accompany or precede a headache, such as changes in your vision?
http://www.w3.org/ns/prov#wasQuotedFrom	aetna.com