Mary's Cheese Tortellini Salad

1# tortellini, cooked
2# tomatoes, chopped
1/2# mozzarella cheese, cubed
1/4 C. chopped parsley
3/4 C. olive oil
1/4 C. white wine vinegar
3 T. minced basil
1 t. salt and pepper, each

Combine all and refrigerate.