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: John goes to the store.. Sentence 1: John went to the store. Sentence 2: John wanted to buy tomatoes. Sentence 3: He looked everywhere for the tomatoes. Sentence 4: The store was sold out of fresh tomatoes. Choices: a. Kathie was treated for a mild concussion. b. John was sad, and went to another store.
Example Output: a

Example Input: Title: Dilbert. Sentence 1: Dilbert liked soda. Sentence 2: He drank it all the time. Sentence 3: He had several for breakfast and some for lunch. Sentence 4: But when he went to the dentist that year is wasn't good. Choices: a. He had four cavities he had to repair! b. The lady was so scared she passed out.
Example Output: b

Example Input: Title: Sushi. Sentence 1: Sully was eating dinner with his friend Billy. Sentence 2: They were at the local sushi joint. Sentence 3: Sully raved about the quality of the fish. Sentence 4: When they got their food, Billy jumped out of his seat. Choices: a. Now, Tom's name and picture are on the wall. b. There was a spider on his plate.
Example Output:
a