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: Posters. Sentence 1: Andrew's mom loved Marilyn Monroe. Sentence 2: Andrew ordered her some Marilyn posters for her birthday. Sentence 3: He was waiting all week for them to arrived. Sentence 4: Finally two days before her birthday he got them from delivery. Choices: a. Frank ate dinner alone and was sad the surprise was ruined. b. He gave them to her for her birthday and she loved them.

Ex Output:
a

Ex Input:
Title: Heroics. Sentence 1: Bruce always wanted to be a superhero. Sentence 2: He loved watching them fight crime on television. Sentence 3: His room was filled with dozens of action figures. Sentence 4: One day, his mother bought him a superhero costume from the store. Choices: a. Taking very things, they quickly left as water seeped into their home. b. Bruce would wear it for the rest of the week.

Ex Output:
a

Ex Input:
Title: Too dark. Sentence 1: Allie wanted a change in her hair color. Sentence 2: She decided to dye it dark. Sentence 3: Too bad for her, it was much too dark. Sentence 4: Allie was scared. Choices: a. Bonnie with a little help from her friends stopped smoking for good. b. She immediately tried bleaching it to make it lighter.

Ex Output:
a