tolong tentukan noun dan noun phrasenya dan noun phrasenya dijabarkan mana head mana modifiernya . please help me

1. noun phrase: nasty dragon (head noun = dragon; modifier : nasty), noun: teacher
2. nouns : desserts, vegetables
3. nouns: barbie, skipper
4. nouns: joe, jim
5. noun: the beatles; noun phrase: singing group (head noun: group; modifier: singing)
6. nouns: rich, ball, bases