Problem: What are the most important words?
my favorite christmas trees are floating in the middle of a frozen lake .
Answer: lake, middle, tree

Problem: What are the most important words?
A clock is illuminating on the street for everyone to see.
Answer: clock, everyone, street

Problem: What are the most important words?
the next day a second cliff fell causing a huge cloud of chalk to appear
Answer:
cliff, cloud, fall