Problem: What are the most important words?
time lapse of sun rising behind clouds with fog covering city like a blanket
Answer: city, cloud, cover, sun

Problem: What are the most important words?
double room with balcony and partial view of the sea and the city .
Answer: balcony, city, room, view

Problem: What are the most important words?
A freight train travelling at dusk with lights on.
Answer:
dusk, light, train