What are the keywords in the following sentence? rows of books on a book shelf and a wall with a giant colourful mural
book, mural, wall

What are the keywords in the following sentence? roast mixed vegetables in a baking dish
dish, roast, vegetable

What are the keywords in the following sentence? rooster crowing on a farm
crow, farm, rooster

What are the keywords in the following sentence? Two giraffe's in a zoo with a large rock.
giraffe, rock, zoo