Complex sentence: Headquartered in Austin, TX, Powerhouse Animation was founded on April Fools' Day 2001 as a privately held animation service studio by Frank Gabriel, Brad Graeber, and Bruce Tinnin.
Split into simpler sentences: Headquartered in Austin, TX, Powerhouse Animation was founded on April Fools Day 2001 as a privately held animation service studio. Powerhouse was founded by Frank Gabriel, Brad Graeber, and Bruce Tinnin.