Complex sentence: According to art historian Adam Hardy, the temple was constructed before 1219 A.D. The temple is constructed with Soap stone, the usage of which was first popularized by the Western Chalukyas and became standard with the Hoysala architects of the 12th and 13th centuries.
Split into simpler sentences: According to art historian Adam Hardy, the temple was constructed before 1219 A.D and is constructed with Soap stone. The usage of Soap stone was first popularized by the Western Chalukyas before it became standard with the Hoysala architects of the 12th and 13th centuries.