Question: What artist is best known for his design of the former estate of John Shaffer Phipps, heir to the U.S. Steel fortune?
Sentence (from "George A. Crawley"): He is best known for the design of John Shaffer Phipps' (the heir to a U.S. Steel Magnate fortune) home, Westbury House (built 1904–10; additions constructed in 1915–16), at Old Westbury Gardens, in Long Island, New York.
Relevant evidence: Yes