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: It was almost Halloween and they didn't know what they'd be. They went to the store to look at costumes. They looked online to get ideas for couples. They eventually decided on Something they thought would work. They decided they would be Mary Poppins and Bert.
 selected sentence: They looked online to get ideas for couples.

They don't know what to be for Halloween >Causes/Enables> They look online to get ideas for couples