REMOVE

1. horizon line
2. clouds
3. trucks
4. bone (material)

WHAT

1. Visual Works (hierarchy n … (1)
2. artists (visual artists) (1)
3. beards (1)
4. black-and-white film (1)
5. coats (garments) (1)

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WHEN

1. 1960 (1)
2. 1975 (1)
3. between 1960 - 1975 (1)