REMOVE

1. tires
2. Visual Works (hierarchy name …
3. cityscapes (representations)

WHAT

1. New York, New York (1)
2. automobiles (1)
3. buildings (structures) (1)

More 

WHO

1. Clyfford Still; Still, Cl … (1)
2. Still, Clyfford (1)

WHEN

1. 1950 (1)
2. 1954 (1)
3. circa 1952 (1)