Problem: What are the most important words?
An Optometrist checks a man's vision before the man tries on his new glasses.
Answer: check, glass, vision

Problem: What are the most important words?
the dj looked effortlessly smart in his pinstriped blazer and charcoal jeans
Answer: blazer, jean, look

Problem: What are the most important words?
students relax on the lawn outside late gothic revival structure
Answer:
lawn, relax, student