query: When was the comic book series The Walking Dead introduced?
passage: The Walking Dead (comic book)
The Walking Dead debuted in 2003, published by Image Comics, with art by Tony Moore for the first six issues and Cliff Rathburn shading the art after issue five. Charlie Adlard took over as artist on issue #7, after he was approached by Kirkman.[5] Moore also did the cover art for the first twenty-four issues and the first four trade paperbacks. The remainder were done by Adlard.
passage: The Walking Dead (season 2)
The second season of "The Walking Dead", an American post-apocalyptic horror television series on AMC, premiered on October 16, 2011, and concluded on March 18, 2012, consisting of 13 episodes. Developed for television by Frank Darabont, the series is based on the eponymous series of comic books by Robert Kirkman, Tony Moore, and Charlie Adlard. It was executive produced by Darabont, Kirkman, Glen Mazzara, David Alpert, and Gale Anne Hurd, with Mazzara assuming the role of showrunner after Darabont's departure from the series.