What are the keywords in the following sentence? people pray inside a city a temple inside the walls
city, pray, wall

What are the keywords in the following sentence? i thought these clouds looked like dragons .
cloud, dragon, look

What are the keywords in the following sentence? students learn the value of healthy foods .
food, learn, student

What are the keywords in the following sentence? A man fixing tiles in the wall of a room
fix, tile, wall