Multi-layer prepositional phrase
Solution 1:
... from the point of view of generative syntax.
The whole expression is a PP.
The PP "from the point of view" is analysed as prep + NP complement, where the head noun "point" has the PP "of view" as its complement.
The PP "of generative syntax" then functions as a complement within the larger PP, so we have a PP functioning within a larger one.
We know it's a complement because if it is dropped the expression becomes ungrammatical (we can't say *"from the point of view of". "Of" requires a complement to complete the PP).
