About: http://webisa.webdatacommons.org/11735938

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	for demographic variables such as sex and age; these comparisons were included in
http://www.w3.org/ns/prov#wasQuotedFrom	biomedcentral.com