What are the keywords in the following sentence? Many zebra amble about within an enclosure under a bright sun.
enclosure, sun, zebra

What are the keywords in the following sentence? A rugby football flies from the foot of a player in a white uniform.
foot, football, player

What are the keywords in the following sentence? operating system software running on a laptop
laptop, run, software

What are the keywords in the following sentence? fishermen hauling boat up the beach at coast
beach, boat, fisherman