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: Rocks. Sentence 1: We always visited my dad at work on the weekends. Sentence 2: We ordered pizza and took it to him in the evening. Sentence 3: The building was surrounded by piles of rocks. Sentence 4: My brother and I sifted through the rocks looking for ones we liked. Choices: a. Tom made a good profit off of it. b. We filled our pockets and took them home to keep.
Output:
b