About: http://webisa.webdatacommons.org/101245625

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	While the market already offers solar shingles that convert the sun???s energy into electricity, producers typically must use elements that are scarce and expensive, such as indium and gallium.
http://www.w3.org/ns/prov#wasQuotedFrom	yale.edu