REMOVE

1. trees
2. automobiles
3. exterior views
4. plants
5. athletes

WHAT

1. barriers (1)
2. black-and-white film (1)
3. buildings (structures) (1)
4. fences (1)
5. horses (animals) (1)
6. men (male humans) (1)
7. paths (1)
8. polo (field sport) (1)
9. polo clubs (built complex … (1)
10. polo fields (1)
11. signs (declatory or adver … (1)
12. sky (1)
13. spectators (event observe … (1)
14. sports uniforms (1)
15. Visual Works (hierarchy n … (1)
16. woods (plant communities) (1)

WHERE

1. Aiken, South Carolina (1)

WHO

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

WHEN

1. 1966 (1)