Bing one-ups knowledge graph, hires Encyclopaedia Britannica to supply results
 

It may have retired from the cut-throat world of print, but Encyclopaedia Britannica is enjoying a renaissance by supplying results to Bing. Search for a topic and a Knowledge Graph-esque box will offer supplementary information to help you on your way. If it's a topic that the Britannica editors haven't gotten around to covering (Jersey Shore, for example) then the search engine will instead pull the information from Wikipedia, Freebase and Qwicki. Now we're just hoping Bing doesn't plan to revive those door-to-door booksellers, we're a sucker for a good sales pitch.

http://www.engadget.com/2012/06/08/bing-britannica/