A nominal phrase can be regarded a single unit.
A nominal phrase may have a genitive attribute, for example to express possession.
A nominal phrase will often have a relative clause.
The pronouns of the third person may be used to replace nominal phrases.
These have the same gender, number and case as the original nominal phrase.
The case of the nominal phrase can be accusative or dative.
They can also be attributes of a nominal phrase.
In some cases, the preposition and the article of the nominal phrase may or must elide together.
Of course, this nominal phrase may not have a genitive possessor.
The outer nominal phrase can also be the possessor of a noun inside.