Complex sentence: The Claremont Riding Academy, originally Claremont Stables, 175 West 89th Street, between Columbus and Amsterdam Avenues on Manhattan's Upper West Side, was designed by Frank A. Rooke and built in 1892.
Split into simpler sentences: The Claremont Riding Academy, also known as Claremont Stables, was located at 175 West 89th Street, between Columbus and Amsterdam Avenues on Manhattan's Upper West Side. It was designed by Frank A. Rooke and built in 1892.