Chicken Andouille Gumbo

Name: Chicken Andouille Gumbo
Ingredients: 12 cups water; 3 lbs chicken parts; 2 tablespoons vegetable oil; 1 1⁄2 lbs okra; 1⁄2 cup vegetable oil; 1⁄2 cup all-purpose flour; 1 lb andouille sausage, sliced; 1 (28 ounce) canitalian-style whole canned tomatoes; 1 green bell pepper, chopped; 2 stalks celery, chopped; 2 garlic cloves, minced; 1 bay leaf; 2 teaspoons salt; 1 teaspoon dried thyme; 1 teaspoon dried basil; 1 teaspoon cayenne pepper; 1 teaspoon ground black pepper; 1 teaspoon file powder