What are the keywords in the following sentence? A small plane is parked at a runway.
park, plane, runway

What are the keywords in the following sentence? waterfalls which are flowing from different hills are very beautiful to look at .
flow, hill, waterfall

What are the keywords in the following sentence? diplomatic offensive politician greets the crew as he boards a plane heading
board, plane, politician

What are the keywords in the following sentence? flying above the fog during sunrise
fly, fog, sunrise