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: A frog jumped into the road. Sentence2: The bicyclist almost hit it. Sentence3: The bicyclist stopped. Sentence4: He picked up the frog. Sentence5: He kept the frog as his pet.
Frog, Bicyclist

Sentence1: Fred was a worker on his uncle's dock at the pier. Sentence2: He would work everyday cleaning, and catching fish. Sentence3: One day, he noticed a rather large fish in his nets. Sentence4: When he looked a second time, he realized the fish was a dolphin. Sentence5: Fred worked quickly to free the fish from the nets and release him.
Uncle, Dolphin, Fred

Sentence1: I was trapping coyotes on the Platte River. Sentence2: I finally got a pelt on my second week. Sentence3: I realized I did not know how to skin the coyote. Sentence4: I watched a quick informational video about the subject. Sentence5: I skinned the coyote with no problem while following the video.
I (myself), Coyotes