You will be given a definition of a task first, then some input of the task.
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.

Sentence1: Richard had just bought a new home. Sentence2: He wanted to build a garden in his backyard. Sentence3: He worked everyday after work on his garden. Sentence4: He eventually planted tomatoes and squash. Sentence5: Richard made a hearty soup with his vegetables when they were ripe.
Output:
Richard