Q: 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: Frank had a private elevator installed in his home. Sentence2: One Friday night he was going down in it, and it became stuck. Sentence3: No one came to investigate Monday. Sentence4: It was two weeks before anyone noticed he was gone. Sentence5: Frank had died from starvation and thirst.
A:
Frank