About: http://webisa.webdatacommons.org/124613171

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	A biofilter is usually composed of an organic material, such as compost, peat or wood bark, having microorganisms attached thereto which are capable of decontaminating an effluent gas stream.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com