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: Today I saw a baby bird. The bird was in a tree. The mother bird was teaching the baby bird. She dropped the bird out of the nest. The baby bird flew away.
 selected sentence: She dropped the bird out of the nest.

The mother bird teaches the baby bird to fly >Causes/Enables> The mother bird drops the baby bird out of the nest