What are the keywords in the following sentence? repeated pattern made from image of a pineapple
image, pattern, pineapple

What are the keywords in the following sentence? medieval structure seen from the beach at the northern side
beach, side, structure

What are the keywords in the following sentence? macro image of flowers growing in the ornamental garden at the rear of stable block
block, flower, grow, image, rear

What are the keywords in the following sentence? the route will be operated by an aircraft .
aircraft, operate, route