About: http://webisa.webdatacommons.org/10778229

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	as there are four interposing elements between the g with id=gamma and the rect E1, and the second interposing element is a g, both rules match (these are ancestor, not sibling, selectors).
http://www.w3.org/ns/prov#wasQuotedFrom	w3.org