Problem: What are the most important words?
the container ship is unloaded in the port
Answer: port, ship, unload

Problem: What are the most important words?
rapid formation of clouds near the mountains in the sun
Answer: cloud, formation, mountain

Problem: What are the most important words?
a wall of windows provides plenty of natural light in the master bedroom of the model home .
Answer:
bedroom, home, light, provide, window