Problem: What are the most important words?
an adaptation is a feature that allow an organism to better survive in its environment .
Answer: adaptation, environment, feature, organism, survive

Problem: What are the most important words?
Toilet with a black lid and rolls of toilet tissue in a bathroom
Answer: lid, tissue, toilet

Problem: What are the most important words?
flower in the garden around russian federal city .
Answer:
city, flower, garden