In this task, you're given five sentences, numbered 1 through 5, and two options a and b for possible titles for the story. Your job is to choose the title that better fits the story. Indicate your choice by 'a' or 'b'.

Example Input: Sentence 1: Bob was working in his shop. Sentence 2: He was building a shelf. Sentence 3: The shelf was going to house all his book. Sentence 4: He worked all day on it. Sentence 5: When it was finished, Bob was eager to hang it up. Choices: a. Excess Funds Needed. b. The Shelf.
Example Output: b

Example Input: Sentence 1: Juliette lived in a huge house. Sentence 2: She would often wander around it alone at night. Sentence 3: One day she tripped over a pair of her brothers sneakers. Sentence 4: This sent her tumbling down the staircase. Sentence 5: Juliette learned to never wander around the house at night. Choices: a. Nighttime Prowler. b. This Kitten is my Puppy.
Example Output: a

Example Input: Sentence 1: Leticia's first day at college was dull. Sentence 2: She didn't know anyone and everything felt foreign. Sentence 3: She picked up a flyer on her way to her dorm. Sentence 4: It was an invitation for a party that night. Sentence 5: She went and felt a lot better after. Choices: a. Sleep Over. b. New in town.
Example Output:
b