About: http://webisa.webdatacommons.org/425201112

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	Although smoking is the most common cause of emphysema, occupational exposure to chemical fumes and dust also is a risk factor.
http://www.w3.org/ns/prov#wasQuotedFrom	stagesofemphysema.com