About: http://webisa.webdatacommons.org/102267465

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 FIG. 3, a.sub.1 is a distance between the operator and the facsimile machine and b.sub.1 is a height from the facsimile machine to the eyes of the operator.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com