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: Lengthy sleepover. Sentence 1: Tina invited her friend Ann to come sleepover. Sentence 2: She hadn't seen Ann in ages and wanted to hang with her. Sentence 3: Ann said okay and she ended up staying two nights. Sentence 4: But she had forgotten to tell her parents about it. Choices: a. As a result she got grounded for not telling them. b. They all said it was because his references said he was mean.

Output: a

Input: Consider Input: Title: Overemotional. Sentence 1: Vladimir found that Claire was overemotional. Sentence 2: He told her to take pills to help her condition. Sentence 3: But Claire refused as she stated that her feelings were normal. Sentence 4: To settle their dispute, they invited a friend. Choices: a. She was so excited when she bought her dress. b. The argument was heated and the friend said they were overly emotional.

Output: b

Input: Consider Input: Title: A Tragical Tale. Sentence 1: A young couple saved up a great deal of money. Sentence 2: They wanted to use it to buy a house for their newborn son. Sentence 3: They bought the land, and the structure began to take shape. Sentence 4: Yet, a storm hit and destroyed the unstable structure. Choices: a. Even worse, the couple was working in the house when it collapsed. b. He couldn't find them.
Output: a