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: On a sidewalk i saw an old man carrying his heavy bag. Sentence2: I helped him carry his bag along to the bus where he rides. Sentence3: He bid thanks and he wants to give me money. Sentence4: I didn't accept it because i'm not expecting anything in return. Sentence5: Then he said he admires me of my good deeds.
[EX A]: I (myself), Old man

[EX Q]: Sentence1: I made a grilled cheese sandwich. Sentence2: I decided to spice it up with some garlic. Sentence3: The garlic was so strong that it ruined the sandwich. Sentence4: I threw it in the garbage. Sentence5: Luckily, the mice in my kitchen found it delicious.
[EX A]: I (myself)

[EX Q]: Sentence1: I love to climb trees! Sentence2: One day, I decided to climb an oak tree. Sentence3: I didn't realize that oak trees were quite weak. Sentence4: A branch snapped and I broke my leg. Sentence5: I realized I should not climb oak trees.
[EX A]:
I (myself)