Instructions: 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.
Input: Sentence1: Ian bought some seedlings to plant in his new garden. Sentence2: Ian also underestimated the work and time involved in moving. Sentence3: The seedlings sat around much longer than they should have. Sentence4: He knew they'd probably be stunted but he planted them anyway. Sentence5: The herbs all did fine but he never did get any tomatoes!
Output:
Ian