What are the keywords in the following sentence? An tarmac with planes that are allowing passengers to board.
allow, board, passenger, plane, tarmac

What are the keywords in the following sentence? A train moving down the tracks to cross a railroad crossing.
cross, move, track, train

What are the keywords in the following sentence? clearing with grass and flowers with copy space at ground level of a forest floor
floor, flower, grass

What are the keywords in the following sentence? loving the white sweater on top of the lace .
love, sweater, top