Complex sentence: The palace, situated in the center of the mound, had many rooms, arranged around a central courtyard, which was sometimes able to identify their functions: reception rooms, apartments, offices, kitchens, stores.
Split into simpler sentences: The palace, situated in the center of the mound, had many rooms arranged around a central courtyard. The functions of some of those rooms have been identified: reception areas, apartments, offices, kitchens, stores.