What are the keywords in the following sentence? mountains in the upper range shrouded by mist .
mist, range, shroud

What are the keywords in the following sentence? A baby calf stands behind some gathered hay.
calf, hay, stand

What are the keywords in the following sentence? tall stained glass windows greet visitors on the tour
greet, tour, visitor

What are the keywords in the following sentence? motion of nurse and patient walking through the ward inside hospital
hospital, nurse, patient, walk