You will be given a definition of a task first, then some input of the task.
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: Lance and Adam were best friends. Sentence2: When Lance joined the Army, Adam signed up, too. Sentence3: They were in the same unit and were deployed together. Sentence4: Lance took a bullet for Adam.
Output:
Adam was never able to repay Lance.