About: http://webisa.webdatacommons.org/447873433

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	In general, hog manure and urine contains or evolves into ammonia, hydrogen sulfide, methane, nitrates, trihalomethanes, spores of molds, and other contaminants.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es