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: Trip to Australia. Sentence 1: Kelley wanted to go away. Sentence 2: She thought about going to Australia. Sentence 3: She brought along some friends. Sentence 4: On the plane ride there she met someone. Choices: a. I sat at my desk and continued to worry. b. They ended up getting together.
Example Output: a

Example Input: Title: Chinese Food. Sentence 1: We had our daughter and her family over last week. Sentence 2: They live in NYC while we live in Boston. Sentence 3: One night, we ordered Chinese food. Sentence 4: We ordered Mongolian beef, Chow Foon, and appetizers. Choices: a. I was very stuffy that night. b. Finally I began journaling my thoughts and life privately.
Example Output: b

Example Input: Title: Stars are Constellations!. Sentence 1: I asked a friend if they'd ever seen the stars with a good telescope. Sentence 2: They told me they hadn't. Sentence 3: So I invited them to come over and have a look-see. Sentence 4: My friend came over that same night and we used my scope. Choices: a. Earl is proud of his accomplishment. b. They were amazed that most of the stars were really constellations!
Example Output:
a