Question: Which building, a former schoolhouse, is part of a historic district in downtown Cincinnati, bounded by 3rd, 5th, Sycamore, Commercial Sq, and Butler Sts.
Sentence (from "Charles O. Boynton House"): The home is part of the Sycamore Historic District which was designated and listed on the National Register of Historic Places in May 1978.
Relevant evidence: No