Tell me whether these are nouns or proper nouns: United States of America, playground, rope, St. Petersburg, Miami, ocean
United States of America: Proper Noun
Playground: Noun
Rope: Noun
St. Petersburg: Proper Noun
Miami: Proper Noun
Ocean: Noun
Instruction: Tell me whether these are nouns or proper nouns: United States of America, playground, rope, St. Petersburg, Miami, ocean
Context: 
Response: United States of America: Proper Noun
Playground: Noun
Rope: Noun
St. Petersburg: Proper Noun
Miami: Proper Noun
Ocean: Noun