3/4 lb tomato, seeded, diced (about 2 cups)  | 
                                                2 cups diced seeded peeled cucumbers (from about 1 large)  | 
                                                1 cup diced red bell pepper (from about 1 large)  | 
                                                1/4 cup pitted kalamata olives or 1/4 cup other brine-cured black olives, halved  | 
                                                1/4 cup diced red onion  | 
                                                3 tablespoons chopped fresh italian parsley  | 
                                                3 tablespoons extra virgin olive oil  | 
                                                1 1/2 tablespoons red wine vinegar  | 
                                                1/2 teaspoon dried oregano  | 
                                                1/4 cup crumbled feta cheese (about 2 ounces)  | 
                                                pita bread, shells  |