Problem: What are the most important words?
a firefighters connects hoses while fighting a fire which destroyed a vacant home
Answer: fight, fire, firefighter, home

Problem: What are the most important words?
A young girl uses a spatula to spread frosting on a cake.
Answer: cake, frost, spatula

Problem: What are the most important words?
A clock is situated atop a colorful tower.
Answer:
clock, situate, tower