Problem: What are the most important words?
A bowl with steamed broccoli topped with nuts in it.
Answer: bowl, broccoli, steam

Problem: What are the most important words?
Two zebra grazing on grass near a tree.
Answer: grass, graze, tree, zebra

Problem: What are the most important words?
politician squeezes young people into a city while she was visiting meeting children in several halls
Answer:
city, meet, politician