Problem: What are the most important words?
mist rises around the ruins after sunrise
Answer: mist, rise, ruin

Problem: What are the most important words?
balloons are an inexpensive way to add depth to a party or event .
Answer: balloon, event, way

Problem: What are the most important words?
Whole pizza with lots of toppings being served on a wood table.
Answer:
pizza, serve, table, topping