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: Gary was doing his weekly grocery shopping today. Sentence2: He ran into his assistant principal in the snack aisle. Sentence3: When he tried to say hi, she looked at him with an angry grin. Sentence4: She also started to speak with vulgar language.

Although it was a surprise, Gary was speechless.