About: http://webisa.webdatacommons.org/253761042

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 the port has no back buffer, or if the port is an offscreen or printing port, this function does nothing.
http://www.w3.org/ns/prov#wasQuotedFrom	apple.com