Problem: What are the most important words?
This meal has meat, potatoes, broccoli, and carrots.
Answer: broccoli, carrot, meal, meat, potato

Problem: What are the most important words?
military commander visits troops on military conflict
Answer: commander, conflict, troop

Problem: What are the most important words?
a plane sits on the tarmac while up above the storm clouds are gathering
Answer:
cloud, sit, tarmac