You will be given a definition of a task first, then some input of the task.
In this task you are given a short story and a question regarding that story. You must answer the question based on the events of the story. Try to use the same words in the story to answer each question. You should completely answer the question in a short answer. Do not include information that is unnecessary to answer the question.

Mary was afraid of water. Mary and her friend were playing near a pond. Mary's friend fell into the water. Mary pulled her friend out of the water. Mary became a lifeguard the following year.
Why did Mary pull her friend?
Output:
she fell into the water.