Instructions: In this task, you're given the title of a five-sentence story, the first four sentences, and two options for the fifth sentence as a and b. Your job is to pick the sentence option that seamlessly connects with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes more sense.
Input: Title: Permanent. Sentence 1: Sally's daughter found a marker. Sentence 2: She also found her little sister. Sentence 3: The daughters colored on each other. Sentence 4: Sally tried to scrub it off. Choices: a. The marker didn't go. b. He just sat at the field to find someone else to play with.
Output:
a