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.

[EX Q]: Sentence1: Hebert loved going to the local arcade. Sentence2: His favorite game was a shooting game where you rack up a high score. Sentence3: One day Herbert was playing one of his best games yet. Sentence4: He made it to the last level and won the game. Sentence5: Herbert got the highest score in the game that day.
[EX A]: Herbert

[EX Q]: Sentence1: I had a glass of water. Sentence2: I thought it tasted bland. Sentence3: I opened my refrigerator. Sentence4: I found a lemon in the door. Sentence5: I squeezed lemon into my water.
[EX A]: I (myself)

[EX Q]: Sentence1: Last Saturday morning, I was busy doing laundry in our garage. Sentence2: Our washer and dryer is out there because the house is small. Sentence3: My cat Lucy was keeping me company while I folded the whites. Sentence4: Suddenly I heard an awful loud screeching sound! Sentence5: Lucy had a huge gray rat in her mouth that was singing it's last song.
[EX A]:
I (myself), Rat, Lucy