Problem: What are the most important words?
A pedestrian runs through a don't walk warning.
Answer: pedestrian, run, walk

Problem: What are the most important words?
A chair in front of a laptop on top of a desk.
Answer: chair, desk, front, laptop, top

Problem: What are the most important words?
president and director standing near an elephant during a rehearsal for circus .
Answer:
circus, director, president, rehearsal, stand