Given the task definition and input, reply with output. 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.

1 stalk celery, finely chopped (1/2 c.), 1 medium onion, finely chopped, 2 Tbsp. butter, 3 Tbsp. all-purpose flour, 1/4 tsp. salt, 1/4 tsp. dried basil, crushed, 1 (3 oz.) pkg. thinly sliced smoked beef, 3 c. milk, 3/4 c. shredded American cheese, 1 Tbsp. snipped parsley

celery, onion, butter, flour, salt, dried basil, beef, milk, American cheese, parsley