About: http://webisa.webdatacommons.org/114591018

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	Particles such as cat dander, tobacco smoke, metal and organic fumes, and cell debris, all ranging in size from 0.01 microns (cell debris) to 0.9 microns (cat dander), require a full ten hours to settle 1 m.
http://www.w3.org/ns/prov#wasQuotedFrom	homeenergy.org