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: Rick and Nick were playing in the yard. Sentence2: Rick saw an insect he never saw before. Sentence3: Daddy told Rick it was an Ant. Sentence4: The ant ran up Rick's arm. Sentence5: Rick laughed and chased the ants all around the yard.
A:
Ant, Nick, Daddy, Rick