Complex sentence: The Valen class cruiser is a class of starship in the fictional universe of the TV series Babylon 5 that is used by the Interstellar Alliance, a confederation-type affiliation of races including humanity and the Minbari, among others.
Split into simpler sentences: The Valen class cruiser is a class of starship in the fictional universe of the TV series Babylon 5. The class is used by the Interstellar Alliance, a confederation-type affiliation of races including humanity and the Minbari, among others.