فِي الدَّارِ زَيْدٌ وَالْحُجْرَةِ عَمْرٌو
Translation: Zayd is in the house, and ʿAmr is in the room.
Fī d-dāri: prepositional phrase in the fronted-predicate slot.
Zaydun: delayed nominal subject (mubtadaʾ), nominative.
Al-ḥujrati: genitive as coordinated with al-dāri.
ʿAmrun: nominative, participating in the second coordinated nominal relation with Zayd.
The book treats this as a special two-governor coordination, not an ordinary single-noun conjunction.