About: http://webisa.webdatacommons.org/66412039

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	[Bug 12972] New: The IDL parts in this section contain what I believe to be non-valid WebIDL, specifically Element? and object? - both interface types and object are already nullable, so the ? is invalid. (Thursday, 16 June)
http://www.w3.org/ns/prov#wasQuotedFrom	w3.org