Can a painting be *false* by not depicting reality? Suppose that some painter

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Can a painting be *false* by not depicting reality? Suppose that some painter paints something that really happened, but adds or subtracts details that do not correspond to reality. Or suppose that the painter not only does that, but adds a title that makes it cleat that the painting to the real event. Or think about "photoshopped" photos. The reason why I am asking this is that I often read on the internet that (only?) sentences and "propositions" can be true or false, and a painting is not a sentence nor a proposition.