What are the keywords in the following sentence? a giraffe is eating out of a cage at a zoo
cage, eat, zoo

What are the keywords in the following sentence? with your purchase receive at no cost
cost, purchase, receive

What are the keywords in the following sentence? There are a lot of appliances stacked in the room.
appliance, lot, room

What are the keywords in the following sentence? Blue bathroom with a mirror hanging over the sink.
bathroom, hang, mirror, sink