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: Cassandra was trying to fish. She usually got one or two bites but tonight nothing. She wasn't sure the cause, but she tried throwing in some food. Soon more fish began swimming around. She tried again and luckily nabbed a couple.
 selected sentence: She wasn't sure the cause, but she tried throwing in some food.

Cassandra  is trying to fish >Causes/Enables> Cassandra throws food into the water