REMOVE

1. buildings (structures)
2. sky
3. trains (vehicle groupings)
4. fences
5. 1940

WHAT

1. Visual Works (hierarchy n … (1)
2. artists (visual artists) (1)
3. benches (furniture) (1)
4. branches (plant component … (1)

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WHERE

1. New York, New York (1)

WHEN

1. 1964 (1)
2. ca. 1964 (1)