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 seamlessly connects with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes more sense.

Input: Consider Input: Title: Lucy's First Day. Sentence 1: Lucy was excited to go to school. Sentence 2: Today was her first day of kindergarten! Sentence 3: She met her new teacher and classmates. Sentence 4: Lucy loved getting to know her new school. Choices: a. That night, she told her parents all about her day. b. Tom ran up the stairs as fast as he could.

Output: a

Input: Consider Input: Title: Great date. Sentence 1: Lisa went on a date with Lewis. Sentence 2: She was excited to go on it. Sentence 3: When the two met at the restaurant it was great. Sentence 4: They had amazing chemistry. Choices: a. Lisa wanted to be with him again. b. Lucy screamed and tried to kill it.

Output: a

Input: Consider Input: Title: Library. Sentence 1: Aiden acknowledged that he wasn't very smart. Sentence 2: He went to the library and started reading books. Sentence 3: He eventually went through a whole shelf. Sentence 4: The librarian was very pleased with him. Choices: a. They return to their homes cherishing those moments. b. Then she noticed the shelf was in the kid's section.
Output: b