About: http://webisa.webdatacommons.org/442109361

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	Believe me my wife is a retired nurse & I would hear about it if we were getting any kind of dust or smell coal or not, the filters do not even get too dirty but I change them fairly often.
http://www.w3.org/ns/prov#wasQuotedFrom	nepacrossroads.com