Functions and forms

A position paper published by the European commission setting out the EU’s aims for Ireland after Brexit said that, as the problem was of the UK’s making, it was the UK’s responsibility to come up with a “unique solution”. (The Guardian.)

A position paper published by the European commission setting out the EU’s aims for Ireland after Brexit - a subject, (a noun phrase);

said - a predicator (a verb);

that (...) it was the UK’s responsibility to come up with a “unique solution - a direct object (a content clause);

as the problem was of the UK’s making - an adjunct (a prepositional phrase).

Have I identified functions and forms correctly?