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.

[Q]: Sentence1: Mr Jones was the warden at the jail. Sentence2: He would lock criminals up until they were free to go. Sentence3: He did not like his job very much. Sentence4: He tried not to talk to the criminals. Sentence5: He just wanted the day to be over so he could go home.
[A]: Criminals, Mr jones

[Q]: Sentence1: Tom was in the shower. Sentence2: He heard someone knocking at the door. Sentence3: He rushed to the door. Sentence4: He only had a small towel. Sentence5: He was embarrassed but answered the door.
[A]: Someone, Tom

[Q]: Sentence1: Sam wanted to bake a cake for his friend's birthday. Sentence2: He checked his ingredients and saw he had no milk. Sentence3: Sam decided to just use water instead. Sentence4: When the cake was finished he presented it to his friend. Sentence5: She said it looked good and tasted okay.
[A]:
Friend, Sam