About: http://webisa.webdatacommons.org/405377641

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	Thus, children widgets do not need to position or size themselves, but only need to provide button widget functionality, such as responding to input events from pointing devices, a keyboard, or other input devices.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com