About: http://webisa.webdatacommons.org/140509211

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	Once the disease develops into symptoms such as severe fatigue and intolerance to physical activity, it may have advanced to one of the severe stages.
http://www.w3.org/ns/prov#wasQuotedFrom	wisegeek.org