Greek Salad

Name: Greek Salad
Ingredients: 1 head romaine lettuce , torn into bite-size pieces; 1 pint cherry tomatoes or grape tomatoes, halved; 8 ounces feta cheese , broken into large pieces or crumbled; ½ red onion , halved and thinly sliced; 1 large cucumber, peeled , halved and thinly sliced; ½ cup Kalamata olives , pitted; 3 tablespoons olive oil; 3 tablespoons red-wine vinegar; 1 teaspoon minced garlic; ½ teaspoon dried oregano; Coarse salt and freshly ground pepper