2 tablespoons olive oil
6 chicken thighs
6 garlic cloves, chopped
1 14 1/2-ounce can Mexican-style stewed tomatoes
1 large 8- to 10-ounce) yam, peeled, cut into 1/2- to 3/4-inch dice
1 4-ounce can diced green chilies
1/2 cup low-salt chicken broth
1/2 cup packed chopped fresh cilantro
1/4 cup bottled mild green taco sauce