Problem: What are the most important words?
beautiful children are students together in a classroom in school get the education with the teacher
Answer: classroom, school, student, teacher

Problem: What are the most important words?
sailors and armed force prepare to launch tiltrotor aircraft from the flight deck of the amphibious assault ship .
Answer: aircraft, deck, prepare, ship

Problem: What are the most important words?
country has delivered tanks to the states
Answer:
country, deliver, state