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 asked my girlfriend if we can visit my friend. Sentence2: Since she thought that I knew about her birthday, she said yes. Sentence3: When we got inside of the place, my friend's brother called us. Sentence4: He told us to hide.

When my friend came, he surprised him for his birthday party.