Chicken Empanadas

Name: Chicken Empanadas
Ingredients: 2 tablespoons Olive Oil; 1½ pound Boneless, Skinless Chicken Breast (cut in half lengthwise to make thinner pieces); 1½ teaspoon Salt (or to taste); ¼ teaspoon Black Pepper; 1 Small Onion (finely diced); 2-3 Garlic Cloves (minced); ½ teaspoon Cumin; ½ teaspoon Dried Oregano; ¼ cup White Wine; 1 8 ounce Can Tomato Sauce; ¼ cup Water; ½ cup Pitted Spanish Olives (chopped); 10 Large Empanada Discs (defrosted (use package directions)); 1 Egg (beaten); 1 tablespoon Water