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: Bob left his bedroom and a familiar smell greeted him. He walked down the hallway, following the scent. The smell was coming from the kitchen. Grandma had just pulled a hot tray out of the stove. She made the best biscuits.
 selected sentence: He walked down the hallway, following the scent.

Bob smells Something familiar >Causes/Enables> Bob follows the scent