About: http://webisa.webdatacommons.org/370945759

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	button assign (before, there were only 2 types of controls to choose);
http://www.w3.org/ns/prov#wasQuotedFrom	siliconera.com