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: Eric has always been overweight. Sentence2: His new year's resolution was to stick to a diet. Sentence3: He went to the gym in January and ate healthier. Sentence4: That last about a month.
Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Eric then gave up working out.