What are the keywords in the following sentence? central courtyard splits the home into separate wings .
courtyard, home, wing

What are the keywords in the following sentence? athlete of challenges for a high ball during the match .
ball, challenge, match

What are the keywords in the following sentence? ship type on the sea with dramatic sky during in winter
sea, sky, type

What are the keywords in the following sentence? rocks covered in moss by the sea
cover, moss, rock