About: http://webisa.webdatacommons.org/373285208

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	Second, questions requiring recall were particularly difficult, e.g. remembering symptoms
http://www.w3.org/ns/prov#wasQuotedFrom	biomedcentral.com