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.

Example Input: 3 large sweet potatoes, sliced, 1/4 c. oil, 1/2 stick butter, 1 c. sugar, 2 Tbsp. water, vanilla (optional)
Example Output: sweet potatoes, oil, butter, sugar, water, vanilla

Example Input: 1 2/3 cups flour, 3/4 teaspoon baking powder, 3/4 teaspoon salt (optional), 3/4 cup butter, plus, 1 tablespoon butter, 1 tablespoon shortening, 3/4 cup brown sugar, 1/3 cup granulated sugar, 1 teaspoon vanilla, 1 egg, 1 cup finely chopped walnuts
Example Output: flour, baking powder, salt, butter, butter, shortening, brown sugar, granulated sugar, vanilla, egg, walnuts

Example Input: 1 1/2 c. half and half, 4 eggs, well beaten, 1/2 tsp. salt, dash of pepper, 1 (9-inch) unbaked pie shell, 2 c. (8 oz.) shredded natural Swiss cheese, 2 Tbsp. flour, 8 slices crispy cooked bacon, crumbled
Example Output:
eggs, salt, pepper, shell, Swiss cheese, flour, bacon