Underline or italicize the nouns in the following sentences. Identify what kind of noun each one is - common (C), proper (PR), singular (S), plural (PL). All nouns will have more than one identification, for example, a single or plural common noun.

a. There are five cars parked at the library.
b. Mrs. Johnson is Carla's aunt.
c. Cows like to lie down in the rain.
d. The blue team won the game.