REMOVE

1. trees
2. clouds
3. buildings (structures)
4. plants
5. 1971 August 1

WHAT

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

More 

WHERE

1. Westminster, Maryland (1)

WHO

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

WHEN

1. 1971 (1)