Instructions: In this task, you're given four sentences of a story written in natural language, and one last sentence (Sentence5). Your job is to classify whether the last sentence completes the rest of the story coherently or not by providing 'Yes' or 'No'.
Input: Sentence1: Bob was at the grocery store. Sentence2: At check out, he realized he forgot his credit card. Sentence3: The woman behind him offered to buy his groceries. Sentence4: Bob was so appreciative. 
 Sentence5: He promised to pay her back.
Output:
Yes