Problem: What are the most important words?
A stuffed teddy bear sits on a desk
Answer: desk, sit, teddy

Problem: What are the most important words?
The boy comes up from the surface and another boy is seen walking to the end of the board.
Answer: come, end, surface

Problem: What are the most important words?
A boat traveling across a lake near well light bridges.
Answer:
boat, bridge, travel