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: Tree. Sentence 1: Carl was tasked with finding his family's Christmas tree. Sentence 2: He was fifteen and he felt very manly and important. Sentence 3: But after a night of searching, no tree seemed perfect enough. Sentence 4: He went and bought an artificial tree at the store. Choices: a. Carl's family loved his fake tree just as much as any real tree! b. Glen decided she wasn't so bad afterall.

Ex Output:
b

Ex Input:
Title: The special song.. Sentence 1: Louise was trying to write a song. Sentence 2: Nothing seemed to be coming out organically. Sentence 3: She decided to just let her filter go and pour her heart out. Sentence 4: The resulting song was extremely soulful. Choices: a. It ended up being very successful. b. He sheepishly entered the correct email, which worked perfectly.

Ex Output:
b

Ex Input:
Title: Monster. Sentence 1: She laid in bed, wide awake. Sentence 2: She couldn't stop thinking about the space under the bed. Sentence 3: She was terrified there was a monster under there. Sentence 4: She rolled toward her husband, who was sleeping soundly. Choices: a. Tom lost all his work. b. She started giggling when she realized how silly she was being.

Ex Output:
a