What are the keywords in the following sentence? paddle an open canoe along lake .
canoe, lake, paddle

What are the keywords in the following sentence? Two people hang gliding from a red, white and black glider with blue, cloudy skies behind them.
glide, glider, sky

What are the keywords in the following sentence? shoppers came looking for deals on the day after western christian holiday .
holiday, look, shopper

What are the keywords in the following sentence? working tug boat guiding a large container ship through the narrow entrance of harbour
boat, entrance, guide, ship, work