REMOVE

1. forests (plant communities)
2. trees
3. buildings (structures)
4. 1971

WHAT

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

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WHERE

1. Westminster, Maryland (1)

WHO

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

WHEN

1. 1971 August 1 (1)