Problem: What are the most important words?
A train on a track leaving the station.
Answer: leave, track, train

Problem: What are the most important words?
antique empty chair on rock by the sea against cloudy sky
Answer: rock, sea, sky

Problem: What are the most important words?
tourist attraction is a fortification built by traders for trade in timber and gold
Answer:
attraction, fortification, gold, timber, trader