What are the keywords in the following sentence? A Singapore Airlines plane in an airport with trucks parked nearby
airport, park, plane, truck

What are the keywords in the following sentence? an astronaut drifting in space is rescued by a space shuttle orbiting earth
drift, earth, orbit, shuttle, space

What are the keywords in the following sentence? grove of aspen trees with white bark and bright green vivid colours in the wild flowers and grasses underneath
bark, colour, tree

What are the keywords in the following sentence? Large poster on wall behind white commode in dark tiled bathroom.
bathroom, poster, wall