Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Ruins of Kilwa Kisiwani and Ruins of Songo Mnara' has mentioned 'Stone' in the following places:
Occurrence Sentence Text Source
Evidence of growth in wealth can be seen with the appearance of stone buildings around the 13th century CE, before which all of the buildings were wattle-and-daub.
Coral stone was used to build up the causeways with sand and lime being used to cement the cobbles together.
The structure was built out of coral stone on a high bluff overlooking the Indian Ocean.
The coral rag was set in limestone mortar and cut stone was used for decorative pieces, door jams, and vaults.
The wealthy enjoyed indoor plumbing in their stone homes and the poor lived in mud huts with thatched roofs.
The ability of the islands to continue to express truthfully their values has been maintained in terms of design and materials due to limited consolidation of the structures using coral stone and other appropriate materials, but is vulnerable, particularly on Kilwa Kisiwani to urban encroachment and coastal damage as these threaten the ability to understand the overall layout of the mediaeval port city.