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.

Input: Consider Input: Title: Flowers. Sentence 1: Arnold knew that Helga's favorite flowers were daisies. Sentence 2: He went to the floral shop to purchase a bouquet of daisies. Sentence 3: After perusing different options, Arnold chose his favorite one. Sentence 4: He excitedly rushed home to deliver the flowers. Choices: a. Arnold wished Helga a happy birthday as he handed her the flowers. b. She spent her first evening ironing all her clothes!

Output: b

Input: Consider Input: Title: Kindergarten Graduation. Sentence 1: The students lined up in their graduation caps. Sentence 2: They entered the gym as Pomp and Circumstance played. Sentence 3: They assembled in a line beside the stage. Sentence 4: The principal called out the students' names. Choices: a. Each child received their diploma and shook the principal's hand. b. So he created a password to only let his friends in.

Output: b

Input: Consider Input: Title: Mountain Drive. Sentence 1: Sheena is from Nebraska and has never seen the mountains. Sentence 2: I decided to take Sheena for a drive in the mountains. Sentence 3: I picked her up this morning and we headed out. Sentence 4: She was amazed by how beautiful the mountains are. Choices: a. Sheena says she is moving to the mountains next year. b. They all pretended not to know.
Output: b