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: The ice cream truck could be heard from several blocks away. One hot summer day the music played and all the kids came outside. They waited and waited but the truck did not get closer. Finally I got on my bike and rode toward the sound. The ice cream truck had a flat tire three blocks away.
 selected sentence: They waited and waited but the truck did not get closer.

The ice cream truck is heard >Causes/Enables> The kids wait