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 does not connect with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes less sense.

Ex Input:
Title: Wrong Gift. Sentence 1: Tom bought gifts for his girlfriend and family. Sentence 2: He got them mixed up after he wrapped them. Sentence 3: Tom accidentally gave his mom his girlfriend's gift. Sentence 4: It was a personal item. Choices: a. He placed the bowl in the sink and took a nap. b. Tom was really embarrassed and apologized profusely.

Ex Output:
a

Ex Input:
Title: A rainy day at the fair. Sentence 1: Sam and his family went to the local town fair one Saturday. Sentence 2: It was hot and humid but they tried to have fun anyway. Sentence 3: Sam went on a few rides and played a few games. Sentence 4: Suddenly it became very dark and the humidity broke. Choices: a. Sam and his family ran to the car getting soaked by the rain. b. The kids cried to stay and play.

Ex Output:
b

Ex Input:
Title: Missing Parts. Sentence 1: Tom bought an open item from the store. Sentence 2: It was furniture he had to put together. Sentence 3: Tom was near finishing when he noticed some missing parts. Sentence 4: Tom returned it to the store. Choices: a. He got his money back. b. He died of a heart attack ten years later.

Ex Output:
b