About: http://webisa.webdatacommons.org/128924397

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	Heavy or long-term exposure to secondhand smoke or other air pollutants may also contribute to COPD.
http://www.w3.org/ns/prov#wasQuotedFrom	nih.gov