Problem: What are the most important words?
Three hikers rest in the shade of a tree in the desert.
Answer: hiker, rest, shade

Problem: What are the most important words?
A girl's dorm room with posters, desk, chair and shelves.
Answer: chair, room, shelf

Problem: What are the most important words?
statue of monarch on the roof with late gothic revival structure and tourist attraction in distance
Answer:
attraction, distance, statue