About: http://webisa.webdatacommons.org/15128822

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	They are also not necessary when people identify icons mainly based on their position (the back button is always on the very left in a browser's button bar, for example).
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com