Complex sentence: Visioncon has been Missouri's premier comic book, science fiction, fantasy, live action, role playing, and gaming convention and was founded by the Visionary Guild, a Wargaming club located in Springfield, Missouri.
Split into simpler sentences: Visioncon has been Missouri's premier comic book, science fiction, fantasy, live action, role playing, and gaming convention. It was founded by the Visionary Guild, a Wargaming club located in Springfield, Missouri.