About: http://webisa.webdatacommons.org/415609062

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	Hours of time, including time spent in training, donated by volunteers were estimated
http://www.w3.org/ns/prov#wasQuotedFrom	biomedcentral.com