About: http://webisa.webdatacommons.org/240609684

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	system, especially the line of sight in a helmet visorUS5961474 *Mar 20, 1998Oct 5, 1999Reis; Mark T
http://www.w3.org/ns/prov#wasQuotedFrom	google.com