About: http://webisa.webdatacommons.org/315719389

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	Secondhand smoke contains over 4,000 chemicals-- 200 are poisons and at least 69 cause cancer and other diseases.
http://www.w3.org/ns/prov#wasQuotedFrom	cleanair.org