Problem: What are the most important words?
people visit a city where military commander and others were assassinated in the battle for independence
Answer: city, commander, visit

Problem: What are the most important words?
doctor listening to little boy with a stethoscope
Answer: doctor, listen, stethoscope

Problem: What are the most important words?
a protester is seen being detained by police during the violent clashes on saturday
Answer:
clash, detain, police, protester