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: Kenny was a teacher at a local school. Sentence 2: His students weren't doing as well as they should have. Sentence 3: Kenny told his students he'd give them pizza if their grades improved. Sentence 4: The children did much better on their next exam. Sentence 5: Kenny treated the children to pizza. Choices: a. Record. b. The Incentive.
Example Output: b

Example Input: Sentence 1: I love having pets. Sentence 2: When i was in grade school, i had hamster. Sentence 3: But they all died,so i decided to replace it with guinea pig. Sentence 4: But they also died so i decided to replace it with a puppy. Sentence 5: And now my dog is now more than two years old and healthy. Choices: a. The Vacation. b. pets.
Example Output: b

Example Input: Sentence 1: I once babysat my neighbor's 3 year old daughter. Sentence 2: We were having dinner and she was eating ravenously. Sentence 3: Thinking she wouldn't understand, I made a mean comment. Sentence 4: I said she was eating like a dog and I saw her face sadden deeply. Sentence 5: I decided to never again make these sort of comments! Choices: a. Don't Speak. b. Ear Plugs.
Example Output:
a