Problem: What are the most important words?
A bathroom is seen with towels on the floor.
Answer: bathroom, floor, towel

Problem: What are the most important words?
A white dish has beans and vegetables on it and a container of sauce.
Answer: bean, dish, sauce

Problem: What are the most important words?
Airplane on the tarmac being pulled by a vehicle.
Answer:
airplane, tarmac, vehicle