Definition: 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.
Input: Sentence1: I was working on a spreadsheet. Sentence2: I had to calculate an average value. Sentence3: The value wasn't what I expected. Sentence4: After many hours, I realized I misplaced a value in the sheet.

I learned that I should double check my work.