Complex sentence: The USS "Enterprise" (NCC-1701-E) (or "Enterprise"-E, to distinguish it from prior and later starships with the same name) is a fictional "Sovereign"-class starship in the "Star Trek" franchise.
Split into simpler sentences: The USS "Enterprise" (NCC-1701-E) (or "Enterprise"-E, to distinguish it from prior and later starships with the same name) is a fictional vessel. It is a "Sovereign"-class starship in the "Star Trek" franchise.