Definition: 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.
Input: story: A house had a rat problem. So the owner put down traps before he went to bed one night. The next morning, he found the bait gone, but no rat caught. He was infuriated. This was mostly because he found the trap by stepping on it.
 selected sentence: So the owner put down traps before he went to bed one night.

A house has a rat problem >Causes/Enables> The house owner put down rat traps