Complex sentence: The Creation Museum is not accredited by the American Alliance of Museums, and Gretchen Jennings, editor of "Exhibitionist", a bimonthly journal published by the National Association of Museum Exhibition, argued that creationist museums like the Creation Museum are not museums at all.
Split into simpler sentences: The Creation Museum is not accredited by the American Alliance of Museums. Upon this basis, Gretchen Jennings, editor of "Exhibitionist", a bimonthly journal published by the National Association of Museum Exhibition, argued that creationist museums like the Creation Museum are not museums at all.