About: http://webisa.webdatacommons.org/5377662

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	Pollution from Rooftops Roof runoff contains water pollutants such as bird droppings, chemicals from roofing materials, and heavy metals leached from gutter.
http://www.w3.org/ns/prov#wasQuotedFrom	virginia.gov