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: Charlie's work was having a Christmas party. Sentence 2: Everyone was to bring a small gift for a Christmas game. Sentence 3: The instructions were that there was a ten dollar limit. Sentence 4: However, Charlie's co-worker Doug brought a fifty dollar gift card. Sentence 5: Doug's expensive gift ruined the Christmas game. Choices: a. Gift. b. Local Ad.
Example Output: a

Example Input: Sentence 1: The attendant at the carousel held out his hand for Judy's ticket. Sentence 2: Nearly in tears, Judy showed him the hole in her pocket. Sentence 3: A grandfatherly-looking man behind Judy, reached past her. Sentence 4: In his hand was a ticket. Sentence 5: He graciously offered to pay for her to ride the carousel. Choices: a. Kind Stranger. b. Cast.
Example Output: a

Example Input: Sentence 1: Stewart was very bad at tennis. Sentence 2: One day, he said he wanted to become good. Sentence 3: He played for three hours every day. Sentence 4: He even played tennis in the snow. Sentence 5: After many years, he became the best. Choices: a. Tennis. b. Tissue.
Example Output:
a