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'.

Input: Consider 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.

Output: b

Input: Consider Input: Sentence 1: Heather was having her birthday party with all her classmates. Sentence 2: She was having a good time until some mean girls provoked her. Sentence 3: The girls all ended up in a large fight. Sentence 4: Heather's mom was mad so she ended the party right then. Sentence 5: Heather was so sad, but later she understood that she was wrong. Choices: a. Band. b. The Ruined Party.

Output: b

Input: Consider Input: Sentence 1: I decided to install a new floor. Sentence 2: This floor was marketed as lasting forever. Sentence 3: It took me all day to install it. Sentence 4: When I tested the floor out, the floor cracked. Sentence 5: This made me angry and I had to uninstall it the next day. Choices: a. New Car. b. New Home Floor.
Output: b