About: http://webisa.webdatacommons.org/320735571

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	Matched controls refers to the historical data accumulated by the system matching the user in some way, including but not limited to, matching based on one or more of the age, gender, race, or other portion of the demographic data.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com