Complex sentence: Cosmic Railroad is a band formed in 1999 in Kenosha, WI by Greg Gierl, Mike White, Paul Aceto, Brandon Shilts, and Pete Rallo.
Split into simpler sentences: Cosmic Railroad is a band that was formed in 1999 in Kenosha, WI. It was founded by Greg Gierl, Mike White, Paul Aceto, Brandon Shilts and Pete Rallo.