Tomatoes Stuffed with Bulgur and Pine Nuts

Name: Tomatoes Stuffed with Bulgur and Pine Nuts
Ingredients: 6 large tomatoes (3 lb); 1 1/4 teaspoons salt; 2 tablespoons lentils (preferably French green lentils); 1 1/2 cups water; 1/4 cup extra-virgin olive oil; 1/2 cup pine nuts; 1 large onion, finely chopped; 1/2 cup bulgur (preferably coarse); 1 lb Swiss chard or spinach, stems discarded and leaves thinly sliced (4 cups); 1/4 teaspoon black pepper; 1/2 cup dried currants; 1/3 cup chopped fresh flat-leaf parsley; 2 tablespoons chopped fresh dill; 2 tablespoons fresh lemon juice; Accompaniment: yogurt garlic sauce