REMOVE

1. black-and-white film
2. plants
3. trees
4. hats
5. clouds
6. Westminster, Maryland

WHAT

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

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WHEN

1. 1961 (1)
2. after 1961 (1)