About: http://webisa.webdatacommons.org/228185616

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 its creation, artists appropriated imagery from billboards, newspapers, films, comic books, and other media, and used commercial materials and techniques such as silkscreening, often enlarging images to colossal proportions.
http://www.w3.org/ns/prov#wasQuotedFrom	philamuseum.org