What are the keywords in the following sentence? a ground floor modern apartment next to the sea for rent
apartment, rent, sea

What are the keywords in the following sentence? a row of well weathered violins at a flea market just outside a city
city, market, row

What are the keywords in the following sentence? Someone is working on making a basket by themselves with their hands.
basket, hand, work

What are the keywords in the following sentence? Three slices of pizza on a metal tray inside a restaurant.
pizza, restaurant, slice, tray