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.

Example Input: Title: Charlie's had enough. Sentence 1: One day charlie was washing the dishes at Taco Bell where we worked. Sentence 2: His boss April was very mean to him. Sentence 3: She was talking bad about how slow he was. Sentence 4: Charlie couldn't keep it in any longer. Choices: a. He exploded on April and put her in her place. b. Luckily it fit.
Example Output: b

Example Input: Title: Mally gets saved. Sentence 1: Mally is swimming in the pool. Sentence 2: She attempts to do a water trick. Sentence 3: She gets a really bad cramp. Sentence 4: She cannot swim and starts drowning. Choices: a. Mila was happy she found her new pet. b. A lifeguard jumps in and saves her from drowning.
Example Output: a

Example Input: Title: Teacher's pet. Sentence 1: Susie was the teacher's pet. Sentence 2: Everyone loved her. Sentence 3: But one day Susie handed in an assignment a day late. Sentence 4: It didn't matter because the teacher still gave her an A. Choices: a. However, the water couldn't stop leaking. b. Susie smiled and knew how to get her way.
Example Output:
a