About: http://webisa.webdatacommons.org/287138356

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	They include a treatment group and placebo (control) group, which helps reduce bias and other confounding factors.
http://www.w3.org/ns/prov#wasQuotedFrom	gnc.com