What are the keywords in the following sentence? Zebras grazing on grasses in open rocky hillside.
grass, hillside, zebra

What are the keywords in the following sentence? A fancy bathroom has urinals lined up on a wall.
bathroom, line, urinal, wall

What are the keywords in the following sentence? site listing category is a replica .
list, replica, site

What are the keywords in the following sentence? ethnicity built barricades in the centre of city
build, city, ethnicity