What are the keywords in the following sentence? a construction worker repairs the facade of headquarters on tuesday .
repair, tuesday, worker

What are the keywords in the following sentence? doctors and nurses work round the clock at a hospital .
doctor, hospital, nurse

What are the keywords in the following sentence? an elephant in a habitat at the zoo
elephant, habitat, zoo

What are the keywords in the following sentence? packed fast food for sale at supermarket .
food, pack, supermarket