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: Singing. Sentence 1: Tom was a troubled child. Sentence 2: When he grew older, he had mental problems. Sentence 3: He found a way to cope. Sentence 4: He discovered that singing during stressful times made him feel good. Choices: a. Fran apologized, but she got fired anyway. b. He frequently sung to calm himself down.

Ex Output:
a

Ex Input:
Title: Effort that counts. Sentence 1: Shaun didn't really like carnivals. Sentence 2: Unfortunately, his new girlfriend loved them. Sentence 3: She didn't realise how much he feared clowns. Sentence 4: When they got to the carnival, Shaun screamed at the sight of a clown. Choices: a. His girlfriend felt bad about going, but appreciated that he tried. b. We all got into the water and splashed one another.

Ex Output:
b

Ex Input:
Title: Rob went to work. Sentence 1: Rob had a great weekend. Sentence 2: He kind of dreaded having to go to work on Monday. Sentence 3: He overslept about a half hour. Sentence 4: He got up skipped his shower, and breakfast. Choices: a. Mike left for his appointment. b. He still made it to work in great time.

Ex Output:
a