Problem: What are the most important words?
supporters are holding protest demonstration against the incumbent government and demand
Answer: demonstration, government, hold

Problem: What are the most important words?
places of worship is against the sky with clouds .
Answer: place, sky, worship

Problem: What are the most important words?
The young woman visiting the zoo is posing for a photo with a statue of a giraffe.
Answer:
giraffe, photo, pose, zoo