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: Driving to the grocery store in a storm, Ana heard air raid sirens. Sentence2: Through her windshield, she could see an approaching tornado. Sentence3: Frightened, And quickly pulled up to the store and rushed inside. Sentence4: Managers were leading customers into the basement for safety.

Waiting out the storm, Ana was grateful to have found shelter.