About: http://webisa.webdatacommons.org/75552994

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	The study found that while growing, cost is a barrier to the spread of green roofs, which can cost twice as much as a conventional roof but lasts two or three times longer...
http://www.w3.org/ns/prov#wasQuotedFrom	pickupflowers.com