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.

Example Input: Title: Fred gets a package. Sentence 1: One day fred was sitting at home. Sentence 2: He was watching tv. Sentence 3: He hears the doorbell ring. Sentence 4: He slowly gets up and opens the door. Choices: a. Nothing is there but a package. b. Finally, he fished a lighter out of his pocket and lit the cigarette.
Example Output: a

Example 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.
Example Output: a

Example Input: Title: Several Flavors. Sentence 1: Tom was at an ice cream shop. Sentence 2: The person in front of him was trying all the flavors. Sentence 3: They were going about it slowly. Sentence 4: Tom asked them to hurry up. Choices: a. They begrudgingly did so. b. Stu had to dump the spoiled food in the dumpster of the motel.
Example Output:
a