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: Autistic Grandson. Sentence 1: My old boss has an autistic grandson. Sentence 2: Paul is five and cannot talk. Sentence 3: He was getting treatment but lately has been acting out. Sentence 4: Recently the family brought in a dog as a service animal. Choices: a. So far Paul has been calmer. b. Tom was never able to find it.
Example Output: b

Example Input: Title: Bailey gets a bug. Sentence 1: Bailey is out catching bugs. Sentence 2: She is having a hard time catching them. Sentence 3: She finally catches one. Sentence 4: She puts it into a jar. Choices: a. Brad was grounded and missed the concert. b. She feels sad for the bug and lets it go free.
Example Output: a

Example Input: Title: Wrong Target. Sentence 1: The pitcher took his stance. Sentence 2: He took the baseball and tossed it at the batter. Sentence 3: Before the ball got close, the batter caught a cramp on his leg. Sentence 4: He accidentally kicked the catcher. Choices: a. She tried contacting him several times but he never responded. b. The refs had to call a timeout afterwards.
Example Output:
a