Problem: What are the most important words?
A small airplane with streamers on the tail landing on the runway of a rural airport.
Answer: airplane, airport, landing, runway

Problem: What are the most important words?
the quaint cobbled streets of a town .
Answer: cobble, quaint, street, town

Problem: What are the most important words?
a red big rig is parked in a giant empty field of cement
Answer:
cement, field, park