About: http://webisa.webdatacommons.org/278493781

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	Also associated with gas manufacturing were captured impurities such as ammonia, cyanide, sulfur and heavy metals, particularly arsenic.There were three plants in Gowanus, indicated in blue on the map above.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com