REMOVE

1. ink
2. athletes
3. 1972
4. 1996
5. 1992

WHAT

1. automobiles (1)
2. boys (2)
3. buildings (structures) (1)
4. exterior views (2)
5. farmers (2)
6. farming (1)
7. fields (land) (1)
8. group portraits (1)
9. hills (1)
10. horizon line (1)
11. landscapes (representatio … (2)
12. machinery (1)
13. men (male humans) (2)
14. plants (1)
15. platforms (general) (1)
16. silver gelatin (2)
17. sky (2)
18. tractors (agricultural eq … (1)
19. trees (2)
20. Visual Works (hierarchy n … (2)
21. woods (plant communities) (1)

Less

WHERE

1. Alberta, Canada (2)

WHO

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

WHEN

1. 1920 (2)
2. 1945 (2)
3. between circa 1929 and ci … (2)