About: http://webisa.webdatacommons.org/176862640

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 North America, one of the problems in harnessing solar energy is the fact that there needs to be a slightly south facing roof in direct sunlight for the solar panels to produce an optimum amount of energy.
http://www.w3.org/ns/prov#wasQuotedFrom	themoderngreen.com