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: I went to the beach yesterday. It took forever to get there. We had to use the gps. But the gps was not working. We got stuck.
 selected sentence: But the gps was not working.

The gps doesn't receive a signal >Causes/Enables> The gps isn't working