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: The Lost Bear. Sentence 1: Lucy lost her stuffed bear. Sentence 2: She was very upset and cried all day. Sentence 3: Her mother looked for the bear underneath the couch. Sentence 4: The bear had been there the entire time. Choices: a. Lucy was happy to be reunited with the bear. b. His mom bought him a new phone afterwards.

Output: a

Input: Consider Input: Title: New pant. Sentence 1: Fred needed some new pants. Sentence 2: His current ones ripped. Sentence 3: So he went to the mall. Sentence 4: When he got there he saw there was a sale. Choices: a. So he got pants for half off. b. She broke up with him because he had done this before.

Output: a

Input: Consider Input: Title: Lost Letter. Sentence 1: Tom wrote his girlfriend a letter. Sentence 2: He left it where she could easily find it. Sentence 3: Tom's girlfriend never mentioned it. Sentence 4: Eventually Tom asked about it. Choices: a. Apparently she had never found it. b. He didn't go outside for days.
Output: a