Sweet Potato Polenta with Smoked Sausage and Chard

Name: Sweet Potato Polenta with Smoked Sausage and Chard
Cuisine: American, Italian
Ingredients: 1 link Smoked Sausage (sliced into rounds); 2 - 3 tsp olive oil; 1 bunch Swiss Chard (cut into ribbons ); 1/3 cup Yellow Onion (diced ); 1 clove garlic (minced); 2 tsp Rice Vinegar; salt and pepper to taste; 1 small Sweet Potato (peeled and chopped ); 1 cup uncooked Polenta; 3 cups Water; 1 teaspoon salt; 1 cup Milk; 1/4 teaspoon ground Cayenne Pepper; 1/4 teaspoon Smoked Paprika; 1/8 cup grated Parmesan Cheese; 1 tbsp unsalted Butter