About: http://webisa.webdatacommons.org/363488368

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	Martian Manhunter, Zauriel,, The Stranger, The Specter, Raven and other have all been in Joker's mind and soul and confirmed he is hopelessly insane.
http://www.w3.org/ns/prov#wasQuotedFrom	comicvine.com