Problem: What are the most important words?
there are four giraffes in this field one is feeding
Answer: feed, field, giraffe

Problem: What are the most important words?
COLORFUL BRIGHT EYED CAT SURROUNDED BY ALL BLACK AND WHITE BOTTLES AND CANS
Answer: bottle, can, cat

Problem: What are the most important words?
flock of sheep and goats grazed on open spaces .
Answer:
goat, graze, sheep