Problem: What are the most important words?
A gondola like boat crossing over a bridge
Answer: boat, bridge, cross

Problem: What are the most important words?
Cars travel down an interstate highway on the way to Baltimore and Washington.
Answer: highway, travel, way

Problem: What are the most important words?
art gallery not only has free admission for students but also hosts many intriguing speakers and events .
Answer:
event, speaker, student