What are the keywords in the following sentence? colorful spider on a web waiting for its prey
prey, wait, web

What are the keywords in the following sentence? bulls grazing in the field
bull, field, graze

What are the keywords in the following sentence? colorful hill rising above a peaceful lake
hill, lake, rise

What are the keywords in the following sentence? automobile model and the labrador for which the car was bought .
buy, car, model