About: http://webisa.webdatacommons.org/227741713

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	If the question being asked is about whether a treatment or exposure has an effect or not, then the study needs to have a control group.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com