Problem: What are the most important words?
christmas isolated concept with traditional attributes in the form of a ball .
Answer: attribute, ball, christma, form, isolate

Problem: What are the most important words?
A giraffe lowers its head past a fence into a clump of tall grasses to eat.
Answer: giraffe, grass, head, lower

Problem: What are the most important words?
hikers ascending on the slopes of volcano
Answer:
ascend, hiker, slope