Complex sentence: The Basilica of St. Sernin in Toulouse, France, is the former abbey church of the Abbey of St. Sernin or St. Saturnin, and was built in the Romanesque style between about 1080 and 1120.
Split into simpler sentences: The Basilica of St. Sernin is a church in Toulouse, France, the former abbey church of the Abbey of St. Sernin or St. Saturnin. It was built in the Romanesque style between about 1080 and 1120.