About: http://webisa.webdatacommons.org/254793939

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	Lasting from hours to days, they may be accompanied by such symptoms as throbbing pain, nausea and visual symptoms, such as flashing lights, zigzag lines or partial loss of vision.
http://www.w3.org/ns/prov#wasQuotedFrom	healthywomen.org