Problem: What are the most important words?
A large tower towering over a city with a massive clock.
Answer: city, clock, tower

Problem: What are the most important words?
a firefighter searches through the windows of the burned home
Answer: firefighter, home, window

Problem: What are the most important words?
religious leader exchanges gifts with president of politician during an audience at his private library .
Answer:
exchange, gift, leader, president