Greek Veggie Salad II

INGREDIENTS (Nutrition)
1 large cucumber, chopped
2 roma (plum) tomatoes, chopped
1 (5 ounce) jar pitted kalamata olives
1 (4 ounce) package feta cheese, crumbled
1 red onion, halved and thinly sliced
1/2 (10 ounce) package baby greens
1/2 (10 ounce) package romaine lettuce leaves

6 tablespoons olive oil
1 teaspoon garlic powder
1 teaspoon dried oregano
1 teaspoon dried basil
1 teaspoon Dijon mustard
1 teaspoon lemon juice
1 1/2 cups red wine vinegar