About: http://webisa.webdatacommons.org/19903776

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	Another weakness was the drop-out of subjects which was mainly due to the reason
http://www.w3.org/ns/prov#wasQuotedFrom	biomedcentral.com