What are the major elements of noun phrases?

How many top-level noun phrases are in this sentence?

Dubbing multiculturalism via an artificial equivalence of accents and non-standard structures from an oral language that is used as a second language.

What type of noun premodifier is shown in this sentence:

The tea pot is very hot.

Could a pronoun have modifiers?

Is this a relative clause postmodifier or a prepositional phrase postmodifier?

These characteristics presents the translator with the challenge of finding a balance in the representation or integration of otherness.

Nouns and adjectives are rarely found as noun premodifiers