What are the keywords in the following sentence? lonely tree in the field and moving clouds in the sky time lapse stock footage
field, footage, move

What are the keywords in the following sentence? A man is taking a rest during his fishing trip.
rest, take, trip

What are the keywords in the following sentence? heavy cloud cover during sunrise above the city and the famous landmark
city, cloud, cover, sunrise

What are the keywords in the following sentence? a stream running through the woods
run, stream, wood