نَحْوُ: «أَرَجُلٌ فِي الدَّارِ أَمِ امْرَأَةٌ؟»
Translation: Is there a man in the house, or a woman?
أَ: interrogative particle.
رَجُلٌ: nominative indefinite mubtadaʾ licensed by the question.
فِي الدَّارِ: prepositional phrase functioning as predicate.
أَمْ: coordinating alternative marker.
امْرَأَةٌ: nominative coordinate with the first alternative; the shared predicate is understood from context.