Hearty Vegetable Lentil Stew

Name: Hearty Vegetable Lentil Stew
Ingredients: 2 Tablespoons olive oil; 2 Teaspoons minced garlic; 2½ Cups thinly sliced leeks; 3 stalks celery, thinly sliced; 1 Cup medium dice carrots; 1 Cup medium dice red skin potatoes; 1 15-ounce can diced tomatoes with liquid; 1½ Cup canned pumpkin puree; 5 Cups vegetable stock; 1½ Teaspoon dried oregano; 1 Teaspoon cumin; 1 Teaspoon smoked paprika; 1½ Cup cooked lentils; 1 15-ounce can white beans with liquid; ¾ Cup fresh green beans, snapped in half; ½ Cup canned roasted red peppers, chopped; 2 Tablespoons fresh sage, chopped