About: http://webisa.webdatacommons.org/56994491

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	A large part of all disabling and partially disabling illness, such as headaches, obscure pains, indigestion, constipation, ???nerves???, general weariness, ???laziness???, and lethargy, arise from no known causes.
http://www.w3.org/ns/prov#wasQuotedFrom	gmu.edu