Problem: What are the most important words?
An elephant in an enclosure reaching for something with its trunk.
Answer: elephant, enclosure, reach, trunk

Problem: What are the most important words?
A giraffe leans its neck as it walks through the bush.
Answer: bush, giraffe, neck, walk

Problem: What are the most important words?
view of local train traveling on rail tracks with flourishing cherry blossoms along the railway
Answer:
flourish, railway, track, train, view