In this task, you're given a story (which contains five sentences only). Your task is to find all the characters which are available in the given story.

Example Input: Sentence1: They planted a sunflower garden at their house in the city. Sentence2: They watched it grow all summer. Sentence3: The traffic by their house got heavy when the sunflowers bloomed. Sentence4: Many people yelled something nice as they drove past the garden. Sentence5: When the sunflowers died the traffic went back to normal.
Example Output: Other people

Example Input: Sentence1: Kerry enjoyed playing games on her smartphone. Sentence2: She mostly played free games that made revenue through ads. Sentence3: One day her favorite game had a major update. Sentence4: The new version had many more ads which were more intrusive in nature. Sentence5: Kerry's interest the game waned.
Example Output: Kerry

Example Input: Sentence1: Johnson had always wanted a pet cactus. Sentence2: The only issue was they were very expensive. Sentence3: Johnson then decided to travel to a desert. Sentence4: Johnson got on an airplane and flew to the Sahara Desert. Sentence5: After that, Johnson picked out his favorite cactus.
Example Output:
Johnson