About: http://webisa.webdatacommons.org/30668957

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	For example, in these kinds of trials, half of the participants might be randomly assigned to get a drug or other therapy, and half get a placebo (a pill with no effective ingredients or medications).
http://www.w3.org/ns/prov#wasQuotedFrom	allkids.org