Forget diagramming it, just explain what it means and we'll consider it good enough.
Literal:
Trump is explaining that his uncle was a professor of Economic from "the Wharton School of Finance" and taught at MIT. Since he's republican, that makes him having to state that (I'm a smart person, I come from a smart-family) all the time compared to the democrats where he "would be the smartest person in the room." He then has a stroke, hits his head, tries to explain his nuclear winter factor (where he's dumb and asked three times about why we just don't nuke folks) and says his uncle explained this to him 35 years ago (and you don't remember this?
) has a seizure in the middle of this, belts out something about prisoners and them being nuked (so I guess the "dem towelheads?"). Segues into women being smarter than men, which segues into the middle east and their treatment of women being bad.
So, shortening that even more:
"My uncle was a smart man, that taught at MIT and therefore I come from a smart family. I want to nuke the Middle East because they treat women badly, despite being told by my uncle 35 years ago why this is a bad idea."
(Of course this is hard to parse without the entire conversation/in-context)
