About: http://webisa.webdatacommons.org/170478458

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 can measure it in studies that compare real drugs to dummy pills, where those given the fakes have noticeable improvements to pain and other symptoms.
http://www.w3.org/ns/prov#wasQuotedFrom	phys.org