REMOVE

1. automobiles
2. paths
3. fences
4. plants
5. horses (animals)

WHAT

1. athletes (1)
2. barriers (1)
3. black-and-white film (1)
4. buildings (structures) (1)
5. exterior views (1)
6. men (male humans) (1)
7. polo (field sport) (1)
8. polo clubs (built complex … (1)
9. polo fields (1)
10. signs (declatory or adver … (1)
11. sky (1)
12. spectators (event observe … (1)
13. sports uniforms (1)
14. trees (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)