<http://webisa.webdatacommons.org/406629884>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<downstate.edu> .
<http://webisa.webdatacommons.org/406629884>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/375007016>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/406629884> .
<http://webisa.webdatacommons.org/406629884>	<http://www.w3.org/ns/prov#value>	"The control group of a study is a group that receives a treatment other than the one being studied (for instance, a placebo pill that looks identical to the medication being studied but that has no active ingredients)." .