About: http://webisa.webdatacommons.org/396967291

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	The type of block, namely whether a block is a picture or text, is judged based upon the percentage of the block occupied by black pixels.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com