Given the task definition and input, reply with output. In this task, you have to identify the named entities (NER) which are the ingredients required given its directions. Named entities are the names of the items without their quantity.

Preheat oven to 350*., Grease 15 1/2x 10 1/2 x 1" pan.jelly roll pan. Set aside., Prepare cake mi following package directions for original recipe., Pour into prepared pan., Bake at 350* for 20-25 minutes or until toothpick inserted in center comes out clean., FOR FROSTING:., place butter, milk, cocoa in medium saucepan., Stir on low heat until butter is melted., Add powdered sugar and vanilla extract, stirring until smooth., Stir in pecans., Pour over warm cake., Cool completely.
cake mix, butter, milk, milk, cocoa, powdered sugar, vanilla, pecans