Thick Lentil Soup with Quinoa and Spinach

Name: Thick Lentil Soup with Quinoa and Spinach
Ingredients: 1 cup of black French lentils (you can use also regular green ones, though the black get less mushy); 1/2 cup quinoa; 1 bunch of fresh spinach (about 3 cups or about half a package of frozen spinach, thawed); 2 small onions cut to small dice; 4 medium carrots cut to small dice; 2 cloves of garlic; 3 tablespoons of olive oil; 1 tablespoon of ground cumin; Juice from half a lemon; 2 cups chicken broth; 4 cups of water; Salt and pepper