Complex sentence: The Vauxhall Carlton is a series of executive car sold in two distinct generations based on the Opel Rekord and Omega that was sold by Vauxhall in the United Kingdom from 1978 to 1994.
Split into simpler sentences: The Vauxhall Carlton is a series of executive car sold in two distinct generations based on the Opel Rekord and Omega. It was sold by Vauxhall in the United Kingdom from 1978 to 1994.