What are the keywords in the following sentence? A hotdog with ketchup, mustard, cheese and other toppings.
ketchup, mustard, topping

What are the keywords in the following sentence? politician delivers a speech as he opens the trade fair
deliver, open, speech

What are the keywords in the following sentence? a ship docked at a harbor
dock, harbor, ship

What are the keywords in the following sentence? pigeons eating bread on the street .
bread, eat, pigeon, street