Problem: What are the most important words?
time lapse of a full moon moving through the frame as clouds move by on this winter morning
Answer: cloud, moon, morning

Problem: What are the most important words?
a pair of black scissors and a roll of tape
Answer: pair, scissor, tape

Problem: What are the most important words?
politician holding a brick during his speech to delegates at the annual conference .
Answer:
hold, politician, speech