Complex sentence: Aardvark-Vanaheim is a Canadian independent comic book publisher founded in 1977 by Dave Sim and Deni Loubert and is best known for publishing Sim's "Cerebus".
Split into simpler sentences: Aardvark-Vanaheim is a Canadian independent comic book publisher founded in 1977 by Dave Sim and Deni Loubert. It is best known for publishing Sim's "Cerebus".