What are the keywords in the following sentence? a football floats in a pool of rainwater beside the pitch
float, football, pool

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

What are the keywords in the following sentence? group of doctors and nurses standing in a hospital
doctor, hospital, stand

What are the keywords in the following sentence? a giant turtle returning to the sea after laying and burying her eggs .
egg, lay, return, sea, turtle