Problem: What are the most important words?
city park in the early morning sun and fog .
Answer: fog, park, sun

Problem: What are the most important words?
white light splitting into different colours through a prism shows how it behaves like a wave
Answer: colour, light, prism

Problem: What are the most important words?
dresses in charcoal ... love the color and style with the classic tuxedos
Answer:
color, dress, love, style