Problem: What are the most important words?
firefighters tackle the fire in buildings by the railway line early on saturday morning
Answer: building, fire, firefighter, tackle

Problem: What are the most important words?
students raising clenched fists above the crowd at rally in support
Answer: crowd, fist, student, support

Problem: What are the most important words?
actor with his wife attend premiere during day of festival .
Answer:
day, festival, premiere, wife