What are the keywords in the following sentence? an aircraft receives fuel from cargo aircraft .
aircraft, fuel, receive

What are the keywords in the following sentence? crossing a canal on a beautiful bridge
bridge, canal, cross

What are the keywords in the following sentence? early warning aircraft takes to the sky from its base
aircraft, sky, take

What are the keywords in the following sentence? A bathroom with tiled floor and bathing area, with a large double sink and mirror.
area, bathroom, mirror, tile