REMOVE

1. windows
2. buildings (structures)
3. campuses
4. sky
5. stairs

WHAT

1. branches (plant component … (1)
2. colleges (buildings) (1)
3. color film (film) (1)
4. exterior views (1)
5. lamps (lighting devices) (1)
6. shadows (1)
7. sunlight (1)
8. towers (building division … (1)
9. trees (1)
10. utility poles (1)
11. Visual Works (hierarchy n … (1)

WHERE

1. San Francisco, California (1)

WHO

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

WHEN

1. 1970 (1)
2. ca. 1970 (1)