What are the keywords in the following sentence? woman checks the time on a watch
check, time, watch

What are the keywords in the following sentence? A zebra has its head lowered to eat some loose grass on the ground.
eat, grass, ground, head, lower

What are the keywords in the following sentence? sunrise reflecting clouds on a river with trees on the bank .
reflect, river, sunrise, tree

What are the keywords in the following sentence? a little girl eating and cooking some sort of pizza.
cook, eat, pizza