What are the keywords in the following sentence? soldier guiding the transport of a military vehicle
guide, soldier, vehicle

What are the keywords in the following sentence? rubber zodiac inflatable boat leaving a harbour at sunrise in the middle east
boat, harbour, leave, sunrise

What are the keywords in the following sentence? person takes a punch to the face while trying to separate person and boxer on saturday
boxer, face, punch, take

What are the keywords in the following sentence? A man and woman are balancing their two pug dogs on a surfboard.
balance, dog, surfboard