Al-bābu futiḥa ṣabāḥan has a fronted nominative mubtada; the passive verb contains an implicit passive subject referring to it, and its verbal clause is the predicate.
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Case 7: Fronted Noun Becomes Mubtada
Advanced Parsing Workshop: Integrated Grammar
Al-bābu futiḥa ṣabāḥan has a fronted nominative mubtada; the passive verb contains an implicit passive subject referring to it, and its verbal clause is the predicate.