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: The Amateur Golfer. Sentence 1: Sam is an amateur golfer. Sentence 2: He goes to the golf course on weekends. Sentence 3: One day Sam hit a hole in one. Sentence 4: His face lit up with delight. Choices: a. The next morning Jeb wakes up to find out he's won the jackpot. b. He left the golf course feeling accomplished.

Ex Output:
b

Ex Input:
Title: Glenn skates. Sentence 1: Glenn wants to learn a new skill. Sentence 2: He tries his hand at skateboarding. Sentence 3: He tries and tries to get it right. Sentence 4: After weeks of hard practice. Choices: a. Glenn learns to skate. b. Robin loved spending time with his kids even as someone else.

Ex Output:
a

Ex Input:
Title: Submarine. Sentence 1: Frederick looked out from the periscope. Sentence 2: He saw a ship at the surface. Sentence 3: He alerted the captain. Sentence 4: The captain alerted the crew to prepare to go to depth. Choices: a. His friends thought he was annoying over it. b. The submarine dove under the surface.

Ex Output:
b