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