ذَاكَ الْبَيْتُ كَبِيرٌ.
Translation: That house (at intermediate distance in the book’s scheme) is large.
ذَاكَ: demonstrative in nominative position, with addressee kāf. الْبَيْتُ: nominative apposition. كَبِيرٌ: nominative predicate.
The text contrasts ذَا (near), ذَاكَ (intermediate), and ذَلِكَ (far).