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: Locked Out. Sentence 1: Tom went to the store. Sentence 2: He noticed he locked his keys in his car. Sentence 3: His window was slightly cracked. Sentence 4: Tom got a long stick. Choices: a. She eventually lost 20 pounds and could fit into her old size again. b. He was able to open the door with it.
Example Output: b

Example Input: Title: Mark's meal. Sentence 1: When lunchtime rolled around Mark's stomach was very grumbly. Sentence 2: He hadn't eaten all day and was quite hungry. Sentence 3: But he brought no food from home to eat. Sentence 4: One of his workmates though invited him out to lunch. Choices: a. They had chicken tikka masala. b. And they danced all night better than he did with his broom.
Example Output: a

Example Input: Title: The Girl. Sentence 1: I went to the store to pick up some food. Sentence 2: On my walk there I noticed an attractive girl. Sentence 3: As I passed by, I asked her what she's doing. Sentence 4: As time went on, I asked if I could have her phone number. Choices: a. Danny and his friend were reprimanded. b. I'm now sitting at home awaiting our date tonight at the movies.
Example Output:
b