Problem: What are the most important words?
a damaged vehicle is seen near the site of the blasts at new district in municipality .
Answer: blast, district, municipality, vehicle

Problem: What are the most important words?
a fisherman throws his net into the sea on a beach next to the port
Answer: fisherman, net, port

Problem: What are the most important words?
An airplane being unloaded at an airport filled with people..
Answer:
airplane, airport, unload