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: Sam was an avid sock collector. Sentence2: Sam had over 200 pairs of socks. Sentence3: He brought his socks everywhere he went in a suitcase. Sentence4: One year he took a trip to London where he forgot his suitcase!

All of his time spent collecting socks had been wasted!