About: http://webisa.webdatacommons.org/249512733

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	Combustion sources in indoor settings, including tobacco, heating and cooking appliances, and fireplaces, can release harmful combustion byproducts such as carbon monoxide and particulate matter directly into the indoor environment.
http://www.w3.org/ns/prov#wasQuotedFrom	epa.gov