About: http://webisa.webdatacommons.org/275581786

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	Half of patients are receiving a placebo - but neither the patient knows whether they have the treatment or a placebo, nor does the nurse know which she/ he is administering.
http://www.w3.org/ns/prov#wasQuotedFrom	economist.com