Definition: 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: The Murder. Sentence 1: Archie was found murdered in his home. Sentence 2: The police looked for answers for years. Sentence 3: They could never solve the case. Sentence 4: Finally, Archie's friend confessed to the murder. Choices: a. He wanted to clear his conscience before he died. b. They spent almost every afternoon that summer playing.
Output:
a