<|im_start|>user
Tell me whether these are nouns or proper nouns: United States of America, playground, rope, St. Petersburg, Miami, ocean<|im_end|>
<|im_start|>assistant
United States of America: Proper Noun
Playground: Noun
Rope: Noun
St. Petersburg: Proper Noun
Miami: Proper Noun
Ocean: Noun<|im_end|>
