Green Lentil Tabbouleh Salad

Name: Green Lentil Tabbouleh Salad
Ingredients: 15 oz cooked green lentils (about 200 grams raw lentils (Puy lentils)); 2 bunches flat-leaf parsley (about 2 cups chopped); 1 bunch fresh mint (about 1 cup chopped); 8 oz cherry tomatoes (halved or other deseeded firm tomatoes); 3 tablespoons green onion (chopped. Green tops only); 2 tablespoons lemon (juiced); ⅛ teaspoon cinnamon (ground, optional but recommended); ¾ teaspoon salt; ¼ teaspoon black pepper (freshly ground); 2 tablespoons olive oil (extra virgin); ½ cucumber ( deseeded and coarsely chopped)