Read the following sentence and find out the subject nouns in them.
Sara liked the movie.

Hint:

Subjects' nouns are always the actors in sentences. If action is implied, you should use subject nouns. They are I, you, he, she, we, they, and who.
Object pronouns are those pronouns that receive the action in a sentence. They are me, you, him, her, us, them, and whom.