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: Rick was at a restaurant. Sentence2: And he was curious about how all of the different items tasted. Sentence3: So he ordered way more than he could eat. Sentence4: And he forced himself to finish everything out of guilt. Sentence5: Rick tried to quell his curiosity the next time.
Rick

Sentence1: Ruth was visiting her grandfather's farm. Sentence2: She liked animals but the tall horses scared her. Sentence3: Ruth's grandpa brought her to one of the horses. Sentence4: He showed Ruth that the horse was kind and gentle. Sentence5: Soon Ruth felt much less scared and calmed down.
Ruth, Grandpa

Sentence1: One of my guilty pleasures is watching reality tv. Sentence2: Yesterday I felt lazy and decided to stay in all day. Sentence3: I turned on the television and out on reality tv. Sentence4: The kardashians were on. Sentence5: I ended up watching for six hours.
I (myself), Kardashians