About: http://webisa.webdatacommons.org/250498411

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	It was to protect the generator package when the solar concentrators??? aiming system locked up and the sun moved thus moving all that focused light onto things other than the generator.
http://www.w3.org/ns/prov#wasQuotedFrom	usni.org