About: http://webisa.webdatacommons.org/203347351

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	A second issue is the availability of a sufficient power source for incandescent lights or other light sources, such as laser diodes and the like.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com