What are the keywords in the following sentence? a city is a major landmark and the third largest cathedral
cathedral, city, landmark

What are the keywords in the following sentence? a memorial statue commemorating the soldiers who fought
commemorate, fight, statue

What are the keywords in the following sentence? A crowded airport filled with people carrying luggage.
airport, fill, luggage

What are the keywords in the following sentence? customers browse footwear in the flagship store
browse, customer, footwear, store