REMOVE

1. rivers
2. sidewalks
3. spouses
4. plants
5. branches (plant components)
6. 1964

WHAT

1. Visual Works (hierarchy n … (1)
2. artists (visual artists) (1)
3. benches (furniture) (1)
4. buildings (structures) (1)

More 

WHERE

1. New York, New York (1)

WHEN

1. ca. 1964 (1)