About: http://webisa.webdatacommons.org/304631882

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	The vast number of participants allowed scientists to control for dozens of factors that influence health outcome, such as smoking, diet and education.
http://www.w3.org/ns/prov#wasQuotedFrom	cleanairwatch.org