Stir in the tomatoes and any accumulated juice, the wine, and paprika. Discard any clams that feel heavy (which means they're full of sand), have broken shells, or don't close when tapped. Plonk the clams in the pot and turn the heat to high. If using a cataplana, lock it and cook 5 to 10 minutes, shaking occasionally, until the clams open, 5 to 10 minutes. If using a Dutch oven, cook, covered, stirring occasionally, until the clams open, 5 to 10 minutes.