About: http://webisa.webdatacommons.org/450276285

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	is, i.e. were assigned to one of two groups depending on whether a problem was mentioned
http://www.w3.org/ns/prov#wasQuotedFrom	biomedcentral.com