About: http://webisa.webdatacommons.org/69598127

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	If choices is a property with retain you are leaking the NSMutableDictionary.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com