What are the keywords in the following sentence? An airplane sits on a runway in a airport
airplane, airport, runway, sit

What are the keywords in the following sentence? person on the red carpet wearing my floral tattoo silk evening gown at awards
carpet, evening, gown, wear

What are the keywords in the following sentence? Someone crosses himself again as tugboat plows forward and smashes into the side of the u - boat.
boat, cross, plow, side, smash

What are the keywords in the following sentence? engraving from a portrait of politician .
engrave, politician, portrait