Problem: What are the most important words?
cake with several slices removed and placed on two plates.
Answer: cake, place, plate, slice

Problem: What are the most important words?
the aircraft decreases altitude over the salt lake to make a landing
Answer: aircraft, altitude, decrease

Problem: What are the most important words?
fields of corn to be harvested by the participants later in the day .
Answer:
corn, day, field, harvest