Problem: What are the most important words?
There is a cake doughnut on a small plate along with a mug of coffee.
Answer: coffee, doughnut, plate

Problem: What are the most important words?
A cat going through a window missing some glass panes.
Answer: cat, pane, window

Problem: What are the most important words?
subway as a train gets ready to leave station
Answer:
station, subway, train