premise: It was Dan's turn to present his research project.
initial: He stood up in front of the class and started talking.
counterfactual: He was so focused on his presentation that he wouldn't have noticed a freight train going though the room!
original_ending: One of the classmate's phone rang in class. She immediately turned it off. Dan became slightly flustered.
edited_ending: One of the classmate's phone rang in class.She immediately turned it off.Dan didn't even notice it.<SEP>One of the classmate's phone rang in class.She immediately turned it off.Dan didn't even notice the phone ringing.<SEP>One of the classmate's phone rang in class.She immediately turned it off.Dan didn't even notice.