About: http://webisa.webdatacommons.org/391239991

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	If, for example, there is a large decrease in the incoming value, it is quite likely the the decrease in signal strength represents a black area of the document which area may be a portion of a printed character.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com