Original sentence: Since 2004, they have exclusively chartered steam locomotive #5972 Olton Hall, the train used in the films as the Hogwarts Express, as well as the carriages labeled as such and seen in the movies
Edited sentence: Since 2004, they have exclusively chartered steam locomotive #5972 Olton Hall, the locomotive used in the films as the Hogwarts Express, as well as the carriages labeled as such and seen in the movies