story: Sally liked to yo-yo. She was very good at it. She was doing it one day when it happened. The yo-yo broke off its string and flew across the room. It hit her pet cat which now stays far away from Sally.
 selected sentence: The yo-yo broke off its string and flew across the room.
The yo-yo flies across the room when the string breaks >Causes/Enables> The yo-yo hits the cat