About: http://webisa.webdatacommons.org/422845848

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	Phenomena such as symptoms have natural variation; in other words, they wax and wane over time.
http://www.w3.org/ns/prov#wasQuotedFrom	geripal.org