Problem: What are the most important words?
There is a bunch of bananas sitting in the middle of a desk.
Answer: banana, desk, sit

Problem: What are the most important words?
time lapse of clouds rising from snowy forests during a sunset with snowfall in foreground
Answer: cloud, forest, lapse, sunset

Problem: What are the most important words?
transport for tram turns the corner into a city
Answer:
corner, tram, turn