Problem: What are the most important words?
olympic athlete reacts after winning meters final during sports league championship .
Answer: athlete, championship, meter, react, win

Problem: What are the most important words?
cargo ship docked at the port of a city
Answer: city, dock, ship

Problem: What are the most important words?
family of elephants from the vast herds grazing in african savannah
Answer:
elephant, family, savannah