In this task, you're given a four sentences of story written in natural language. Your job is to complete end part of the story by predicting appropriate last sentence which is coherent with the given sentences.

Sentence1: Amy and her friend were riding bikes on a summer afternoon. Sentence2: They decided to ride to her friend's cousin's house. Sentence3: There was a steep hill which was hard to ride up. Sentence4: Amy was sweating and panting as she rode up the hill.
Amy ended up walking the bike up the hill instead of riding.