About: http://webisa.webdatacommons.org/292093264

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	In the late golden age publishers in general had difficulty maintaining interest in superhero themed titles as even such stalwart characters in the industry such as Superman and Batman had difficulties maintaining consistent sales.
http://www.w3.org/ns/prov#wasQuotedFrom	comicvine.com