About: http://webisa.webdatacommons.org/290291506

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	Researchers believe that about 90 percent of the most common types of lung cancer are caused by smoking or by inhaling secondhand smoke.
http://www.w3.org/ns/prov#wasQuotedFrom	mercyweb.org