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: My girlfriend collects stamps. Sentence2: Not the kind for mail but the kind to stamp things with. Sentence3: She has different cute ones. Sentence4: For her birthday I want to buy her more.

I bought her a rare stamp from an online seller.