In this sentence:
The dogs who run in the street are especially irritable in the late afternoon.
is the verb are transitive? The dogs is a noun phrase, the subject, argument of are; who run in the street is a relative clause. Can you analyse the function of especially irritable in the late afternoon? Are all these words a predicate? Can you call it a phrase (and what type of phase is it)? Or mostly a predicate that may predicate on are, so all those words may be called an object?