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.

Ex Input:
Title: Road Trip. Sentence 1: Amy was going on a trip. Sentence 2: She packed all her bags. Sentence 3: She set her alarm. Sentence 4: She woke up in the next morning ready to go. Choices: a. He had terrible gas! b. Amy took off in her car.

Ex Output:
b

Ex Input:
Title: Sting. Sentence 1: Karen got stung by a bee. Sentence 2: Her arm swelled up immediately. Sentence 3: It turned out she was allergic to bees! Sentence 4: She had to go to the hospital for medication. Choices: a. Then she felt much better better! b. Tim and the friend stopped talking afterward.

Ex Output:
a

Ex Input:
Title: The Full Memory. Sentence 1: Deena was trying to install an app on her phone. Sentence 2: She was being stopped because her memory was full. Sentence 3: She needed the app so she went to make space. Sentence 4: Unfortunately that meant removing some of her favorite apps. Choices: a. Luckily the new app was well worth the trouble. b. She still got to eat the pie, though.

Ex Output:
a