What are the keywords in the following sentence? astronaut and satellite above the earth
astronaut, earth, satellite

What are the keywords in the following sentence? A couple is trying to decide if they should buy bananas at the farmers' market.
buy, couple, decide

What are the keywords in the following sentence? seamless pattern with lilies of the valley .
lily, pattern, valley

What are the keywords in the following sentence? Two men grind their boards on a ledge in the snow
board, grind, snow