Complex sentence: The first building campaign dates from the reign of Mesud I. An inscription dates the fine, ebony minbar to 1155, making it the earliest dated example of Seljuk art in Anatolia.
Split into simpler sentences: The first building campaign dates from the reign of Mesud I. An inscription dates the fine, ebony minbar to 1155. The minbar is the first dated example of Seljuk art in Anatolia.