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: Sewing machine. Sentence 1: I bought a sewing machine because I wanted to learn how to sew. Sentence 2: My first project was to make a simple bag. Sentence 3: It turned out really well. Sentence 4: I've made many projects over the years. Choices: a. I did, however, manage to swim across the lake. b. The best project was a party dress that I made out of satin last year.

Ex Output:
a

Ex Input:
Title: Uber. Sentence 1: Roberto looks at his watch. Sentence 2: It is late, and he needs to get home. Sentence 3: He calls an Uber. Sentence 4: A man picks him up. Choices: a. The man says he's not an Uber, and could he get out of his car. b. His nephew worked with him for the summer.

Ex Output:
b

Ex Input:
Title: Steve's New "Friends". Sentence 1: Steve started hanging out with some older kids from school. Sentence 2: They hung out after school and picked on smaller kids. Sentence 3: One day, they decided to get some cigarettes. Sentence 4: They tried smoking, but Steve got sick to his stomach. Choices: a. Once he felt better, he decided to seek out some new pals. b. I was so humiliated that I hid in my cubicle.

Ex Output:
b