Problem: What are the most important words?
a historic old building now part of the campus
Answer: building, campus, part

Problem: What are the most important words?
person wears a hijab and gown while competing in the preliminary round of the pageant
Answer: compete, hijab, pageant, wear

Problem: What are the most important words?
a clock attached to a wall of a building
Answer:
attach, building, clock, wall