Complex sentence: Raqchi is an Inca archaeological site in the Cusco region in Peru also known as the "Temple of Wiracocha", one of its constituents.
Split into simpler sentences: Raqchi is an Inca archaeological site in the Cusco region in Peru. Sillar (2013) pg 30 It also known as the "Temple of Wiracocha", one of its constituents.