About: http://webisa.webdatacommons.org/15084371

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 traditional linescreen B&W printing, only black ink is used on white paper???any gray you see on the page is an illusion formed by regularly-spaced black dots.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com