Complex sentence: The Basilica was designed by Balthasar Neumann and was constructed between 1743 and 1772, its plan a series of interlocking circles around a central oval with the altar placed in the exact center of the church.
Split into simpler sentences: The Basilica was designed by Balthasar Neumann, and was constructed between 1743 and 1772. In this plan, the altar is placed in the exact center of the church.