All you have to do is write a story. I would write something about meeting a mythological creature. That would make sense when using the sentences, "I could not believe my eyes. I had always thought that they existed only in legends."
Explanation:
If you copy and paste what is supposed to be an original story, you'll probably get caught.
Answer: a word (other than a pronoun) used to identify any of a class of people, places, or things ( common noun ), or to name a particular one of these ( proper noun ).