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: I found a cat tail in the yard. Sentence 2: It looked like it had been bitten off. Sentence 3: I looked around for a large animal. Sentence 4: I didn't see anything. Sentence 5: I got a shovel to clean it up. Choices: a. Dreams. b. Tail.
Example Output: b

Example Input: Sentence 1: Jenny bought many new T-shirts at the beginning of the summer. Sentence 2: But as she stayed in and didn't exercise, they didn't fit by August. Sentence 3: She had to give them all to a charity. Sentence 4: Now every morning she only has old shirts to wear. Sentence 5: So she's going to buy new clothes this afternoon. Choices: a. Changing size. b. Frog.
Example Output: a

Example Input: Sentence 1: Suzy was sitting out in the hot sun. Sentence 2: She was waiting for the parade. Sentence 3: But it was just getting too hot. Sentence 4: So she had to leave. Sentence 5: She had to watch it on television instead. Choices: a. Tilda. b. Far too hot outside.
Example Output:
b