Borei Pri HaGafen: Mixed Drinks: Wine/Grape Juice Mixed with Non-Water Liquids

Say borei pri ha'gafen on mixtures of wine (or grape juice) with beverages other than water, as long as the final mixture would still be considered to be wine (or grape juice) by most people in your area.
Note If the mixture is at least 50\% wine (and maybe even at greater dilutions), it will normally be considered borei pri ha'gafen.