Rub Pork On All Sides With Garlic; Sprinkle With Paprika. In A Large Skillet, Brown The Pork In Butter. Add The Mushrooms, Lemon Juice, Marjoram, Salt And Pepper. Turn Meat To Coat With Seasonings. Cover And Simmer For 25-30 Minutes Or Until A Meat Thermometer Reads 160 Degrees F And Juices Run Clear. Remove Meat And Keep Warm. In A Small Bowl, Combine The Flour And Cold Water Until Smooth; Stir Into The Pan Juices. Bring To A Boil; Cook And Stir For 2 Minutes Or Until Thickened. Slice The Pork; Serve With Gravy And Rice.