In this task, you have to generate the named entities (NER) given its ingredients of the recipe. Named entities are the names of the items without their quantity.
Q: 1/4 softened butter, 1 cup white sugar, 1 teaspoon baking soda, 1/2 teaspoon salt, 2 cups all-purpose flour, 2 eggs, beaten, 1 cup sour cream, 3-1/2 to 4 cups diced rhubarb, Topping:, 1/2 cup brown sugar, 1/4 cup white sugar, 1/4 cup butter, softened, 1/4 cup all-purpose flour, 1/2 tsp ground cinnamon, 1/2 cup chopped walnuts
A: 
butter, white sugar, baking soda, salt, flour, eggs, sour cream, rhubarb, Topping:, brown sugar, white sugar, butter, all-purpose, ground cinnamon, walnuts