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 Input:
Sentence1: Daniel was playing a game of cards. Sentence2: He had bet all of his money on this hand. Sentence3: Daniel was sweating nervously. Sentence4: Daniel revealed his hand. Sentence5: Daniel won the game.

Ex Output:
Daniel

Ex Input:
Sentence1: I had a few pesky trees in my yard. Sentence2: I bought a saw and gloves. Sentence3: I went back home and brought my tools. Sentence4: I walked over to the tree and began to cut it. Sentence5: I cut the tree down and put the tools away.

Ex Output:
I (myself)

Ex Input:
Sentence1: Amanda decided she wanted to grill some asparagus. Sentence2: She preheated her grill. Sentence3: Then she lightly coated the asparagus spears with olive oil. Sentence4: She grilled them over high heat. Sentence5: Then she ate her asparagus.

Ex Output:
Amanda