Problem: What are the most important words?
tower was built to commemorate politician with trees .
Answer: build, commemorate, politician, tower, tree

Problem: What are the most important words?
a student takes notes from her textbook as other medical students gather behind her in a classroom .
Answer: classroom, student, textbook

Problem: What are the most important words?
Four orchestra were sitting on stage playing their cello
Answer:
orchestra, sit, stage