Problem: What are the most important words?
a couple traveling around the world on motorcycles .
Answer: couple, motorcycle, travel

Problem: What are the most important words?
people sheltering from wind and sun under umbrellas in a rocky hollow
Answer: shelter, sun, umbrella

Problem: What are the most important words?
A giraffe eating hay from a feeder installed on a tree.
Answer:
feeder, giraffe, hay