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? girl looking at a view of the city of tourist attraction .
attraction, city, look, view

What are the keywords in the following sentence? bee collecting pollen on the little red flowers
bee, collect, flower, pollen

What are the keywords in the following sentence? image result for passengers on a train in painting
painting, passenger, train