Problem: What are the most important words?
pop rock artist performs live in concert as part of her tour to plug current album
Answer: concert, part, perform, tour

Problem: What are the most important words?
some student or friends are eating pizza in a library
Answer: eat, friend, library, pizza

Problem: What are the most important words?
slow motion colorfully lit fountain in a park at dusk
Answer:
dusk, fountain, light, motion, park