Problem: What are the most important words?
small creek with moss covered stones during autumn on the island
Answer: autumn, creek, stone

Problem: What are the most important words?
People are seated on folding chairs facing an agent's desk.
Answer: chair, desk, face

Problem: What are the most important words?
hd time lapse of morning in the hill full with beautiful cloud on the mountain and green forest
Answer:
forest, morning, mountain