What are the keywords in the following sentence? street scene in the old part of city with people visiting shops and street vendors
city, part, visit

What are the keywords in the following sentence? Bread is sitting on a wire rack to cool.
bread, cool, rack

What are the keywords in the following sentence? a white plane is preparing to board its passengers
board, plane, prepare

What are the keywords in the following sentence? A train moving on the track next to carts that have fallen off.
cart, move, track, train