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: Wendy went to the zoo on Saturday. Sentence 2: She hasn't been to the zoo since she was a kid. Sentence 3: She really wanted to see the elephants. Sentence 4: She was able to feed them some peanuts she bought. Sentence 5: She left glad she went to the zoo. Choices: a. Succulents. b. Zoo.
Example Output: b

Example Input: Sentence 1: I collect comic book original art. Sentence 2: I liked Dick Giordano's work. Sentence 3: Sadly, his work is expensive. Sentence 4: Recently I found his inkwork on eBay. Sentence 5: It was inexpensive, so I bought it. Choices: a. Dick Giordano. b. College?.
Example Output: a

Example Input: Sentence 1: Ida decided she wanted a saltwater fish tank. Sentence 2: She thought saltwater fish were so beautiful! Sentence 3: Then she did some research about setting up a tank. Sentence 4: The process was expensive and very, very difficult! Sentence 5: Ida decided a saltwater tank wasn't worth the effort, after all. Choices: a. Tank. b. Bridge Collapse.
Example Output:
a