Apple salad with celery and tomatoes recipe

Cook celery root, cleaned of skin, chop, and combine with finely chopped peeled apples, tomatoes, onions. Pour marinade prepared with water, tomato and lemon juice or vinegar. 

200 g of ripe apples, 2 tomatoes, 1 celery, 1 onion, lemon juice, salt, sugar, tomato juice.