Take the following as truth: Room 17: Canaletto's hugely popular 18th-century vedute (views) of Venice were aristocratic precursors of modern postcards; in such works as Island of San Giorgio Maggiore, Francesco Guardi achieved both poetry and melancholy.
Then the following statement: "Canaletto's works were the 18-century version of a modern postcard." is true, false, or inconclusive?