About: http://webisa.webdatacommons.org/418940245

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	First, the fear of the known: Common urban contaminants include lead, arsenic and other heavy metals leaked into soil from old paint, leaded gasoline, modern car exhaust and industrial land-use.
http://www.w3.org/ns/prov#wasQuotedFrom	spur.org