REMOVE

1. workers
2. rock
3. trees
4. sky
5. plants

WHAT

1. Visual Works (hierarchy n … (1)
2. black-and-white film (1)
3. blouses (main garments) (1)
4. children (1)
5. daughters (1)

More 

WHERE

1. Westlock, Alberta, Canada (1)

WHO

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

Less

WHEN

1. 1946 (1)
2. ca. 1946 (1)