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 quilt on a bed with two pillows
bed, pillow, quilt

What are the keywords in the following sentence? anyone who says sunshine brings happiness has never danced in the rain
bring, dance, happiness, rain, say

What are the keywords in the following sentence? Luggage is stacked along the wall of a room.
room, stack, wall