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: Shelter. Sentence 1: Nate had had a huge fight with his parents. Sentence 2: He decided to run away from home. Sentence 3: On the streets he realized he had no plans and had to find a shelter. Sentence 4: Luckily, they welcomed him in and gave him a meal and a bed. Choices: a. He felt bad for lying but at least it ended the fight quickly. b. The next day they helped him reunite with his family.
Example Output: b

Example Input: Title: The Washed Up Board. Sentence 1: Lisa was at the beach with a friend. Sentence 2: Lisa had brought her surfboard along. Sentence 3: Lisa's friend asked to borrow the surfboard. Sentence 4: The friend lost the surfboard in the waves. Choices: a. Isaac was happy when he finally became a professional photographer. b. The girls chased the board until it washed up on the shore.
Example Output: b

Example Input: Title: Paris. Sentence 1: Jon could not sleep. Sentence 2: Tomorrow he's going to Paris. Sentence 3: Jon finally slept late into the night. Sentence 4: Jon woke up excited. Choices: a. Jon drove to the airport and flew on a plane to Paris. b. Norman's tree has grown to an immense size.
Example Output:
a