Problem: What are the most important words?
As his campaign manager talks, the governor glances down and shoots a look at his young press secretary.
Answer: glance, look, shoot

Problem: What are the most important words?
looking for colour on a winter day
Answer: colour, day, look

Problem: What are the most important words?
side view of a boeing aircraft on approach to land with landing gear down
Answer:
aircraft, boee, gear, land, view