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: Brad had just recently got a new kitty. His cat was just beginning to develop into an adult. When brad came home from work he screamed when he walked in his house. His cat had brought in a dead bird. Brad cleaned up the bloody mess.
 selected sentence: His cat had brought in a dead bird.

Brad's cat killed a bird >Causes/Enables> Brad's cat had brought in a dead bird