Spicy Vegetable Wrap

Name: Spicy Vegetable Wrap
Ingredients: 1 medium sweet potato, peeled and diced (about 3/4 pound); 2 teaspoons olive oil; 1 teaspoon curry powder, plus 1 teaspoon; Coarse grained salt; 1 (15-ounce) can peeled plum tomatoes; 1 (15-ounce) can chickpeas; 1 cup carrots, julienne or shredded; 1/2 teaspoon red pepper flakes; 5 ounces washed baby spinach leaves; 4 small whole-wheat pitas or other flatbread; 1/2 cup loosely packed cilantro leaves; 1/2 cup plain lowfat yogurt; Lime wedges, for garnish