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: My Sad Brother. Sentence 1: My four year old brother was sad. Sentence 2: He had dropped his toy in a puddle of water. Sentence 3: It was too dirty to get out. Sentence 4: I decided to give him one of my action figures. Choices: a. Tom had to miss the concert. b. This made him the happiest person in our house.

Ex Output:
a

Ex Input:
Title: Hard headed. Sentence 1: Betty Anne and Carl were playing in their backyard. Sentence 2: Because it had rained, their mom told them not to go near creek. Sentence 3: Thinking they wouldn't get swept away, they got in the creek. Sentence 4: A neighbor saw them being pulled down stream and called 911. Choices: a. A police took them back home to their unaware mother. b. We waited for the authorities to arrive.

Ex Output:
b