In the nominal sentence اَلْقُرْآنُ كَلَامُ اللهِ, 'The Qur'an is the Speech of Allah,' what are the grammatical types of the subject and predicate?

Using Phrases in the Nominal Sentence

• The subject is a single word, and the predicate is an iḍāfah
• The subject is an adjectival phrase, and the predicate is a single word
• Both the subject and predicate are adjectival phrases