Problem: What are the most important words?
head coach shouts instructions to his players during the round of match at stadium .
Answer: instruction, match, player, shout

Problem: What are the most important words?
vulture perched on a tree
Answer: perch, tree, vulture

Problem: What are the most important words?
Two suitcases are by a bed and a chair.
Answer:
bed, chair, suitcase