Reese Witherspoon's Marlena tries her best to get Pattinson's Jacob off to his safety, but the orphaned veterinary student won't leave her. The first clip from "Water for Elephants" has been debuted exclusively via MTV Movies Blog. It gives a preview to a fresh scene where Robert Pattinson's Jacob Jankowski is rushed through a speeding train by Reese Witherspoon's Marlena Rosenbluth as she wants