About: http://webisa.webdatacommons.org/451350260

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 general, a port is a function which maps a rectangle (the main window rectangle, say) into another rectangle (the child window rectangle), usually with the second contained in the first.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com