Problem: What are the most important words?
Shot of bathroom with bath on far side near toilet.
Answer: bathroom, side, toilet

Problem: What are the most important words?
time lapse of clouds moving over deep and wide canyon with green forests and dark blue sky
Answer: cloud, forest, lapse, move

Problem: What are the most important words?
helicopter flying slowly along the coast and approaching to the famous city
Answer:
approach, fly, helicopter