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: She opened the back door and propped it. Sentence2: The dog didn't notice. Sentence3: A loud noise got her attention. Sentence4: It was a bird in the backyard. Sentence5: She ran outside to check it out.
Dog, Bird

Sentence1: I made spaghetti last night. Sentence2: I went to the fridge to get my Romano cheese, which I love! Sentence3: To my great disappointment, I had none. Sentence4: I thought grated cheddar might be a replacement. Sentence5: I tried that and it was horrible, so I ate a hamburger instead.
I (myself)

Sentence1: Tim liked spicy food. Sentence2: He was eating with friends. Sentence3: There was some hot sauce. Sentence4: Tim figured he could eat a lot without it burning. Sentence5: He was right and enjoyed the flavor.
Tim, Tim friends