Heat a saucepan over medium heat, add the oil and paprika, and mix well. Add the onion and garlic and sauté until softened. Add the tomatoes, oregano, salt and pepper. Stir to combine and let cook on low heat, cook until the mixture thickens and is uniform. Add this mix and the pumpkin to the pot with the beans. Stir well to combine and add the liquid you put aside earlier (just enough to cover), cover and cook over low heat for 15-20 minutes, or until the pumpkin has disintegrated and the sauce has thickened.