Question: Knife Edge Two Piece 1962–65 is an abstract bronze sculpture by Henry Moore, three casts are on public display, one at which garden at the area, also known also as the John D. Rockefeller Estate, is a 40-room National Trust house in Westchester County, New York?
Sentence (from "Knife Edge Two Piece 1962–65"): A similar work, "Mirror Knife Edge 1977" (or "Knife Edge Mirror Two Piece"), is displayed at the entrance to I. M. Pei's east wing of the National Gallery of Art in Washington, D.C. The Westminster cast was donated by Moore through the Contemporary Art Society to what he believed was the City of London, but its actual ownership was undetermined for many years.
Relevant evidence: No