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: Bob needed to keep some drawers closed. Sentence2: He found a sticky wrap online and ordered it. Sentence3: When it came Bob wasn't very confident it would work. Sentence4: He wrapped it to itself around his set of plastic drawers. Sentence5: Bob was happy to see the wrap worked exactly like it should.
Output:
Bob