What are the keywords in the following sentence? fruit on sale in the supermarket
fruit, sale, supermarket

What are the keywords in the following sentence? a town an ancient city in the southwest of country hewn from towering walls of rock
city, southwest, tower, town, wall

What are the keywords in the following sentence? family looking at the camera in the park
family, look, park

What are the keywords in the following sentence? A parking meter has been decorated with many colors.
color, decorate, meter