REMOVE

1. buildings (structures)
2. sky
3. farms
4. 1971 August 1

WHAT

1. Visual Works (hierarchy n … (1)
2. clouds (1)
3. color film (film) (1)

More 

WHERE

1. Westminster, Maryland (1)

WHO

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

WHEN

1. 1971 (1)