You will be given a definition of a task first, then some input of the task.
In this task, you will be given a short story. One sentence from the story is chosen. Consider the events that happen before that sentence, or are likely to have happened before it. Does any of them directly cause it, or simply make it possible? You should write your answer in the form " A >causes/enables> B". Try to use phrases and sentences from the story to compose your answer when possible.

story: A family was moving into a new house. Their two young sons were bored after a lot of hard work. They noticed some dollies on wheels. They decided to ride around on the dollys. That kept them occupied until they had to get back to work.
 selected sentence: That kept them occupied until they had to get back to work.
Output:
The sons ride the dollys >Causes/Enables> The riding keeps them occupied