Problem: What are the most important words?
airing my sleeping bag next to a piano at work
Answer: air, bag, sleep

Problem: What are the most important words?
A man and a woman in brown shirts eat pizza.
Answer: eat, pizza, shirt

Problem: What are the most important words?
This plastic container has a piece of mean in it along with some broccoli and mushrooms.
Answer:
broccoli, container, piece