Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: Chicago Metallic Commercial II Traditional Uncoated 12-Cup Muffin Pan
Product description: Chicago Metallic has built an unmatched reputation as the "Bakeware Experts" by delivering commercial quality, high performance products employing premium materials and construction. Chicago Metallic is proud to introduce Commercial II, a top of the line assortment of bakeware. Offering both traditional uncoated and dual coated, diamond-quality non-stick Bakeware, the Commercial II line provides the strength and durability to craft delectable results day after day. The entire line is made of heavy-weight aluminized steel for superior heat conduction and even baking results. The Lifetime warranty ensures the avid baker sturdy construction and product longevity. This collection is dishwasher safe, however hand-washing is recommended to extend the product life. This Chicago Metallic Commercial II traditional uncoated 12 cup muffin pan measures 15-3/4 by 11-Inch and each muffin cup measures 2-3/4 diameter by 1-1/4-Inch high.
Product feature: Made from heavy-weight aluminized steel for superior heat conduction and even baking, Traditional, uncoated baking surface, Features a rolled rim to prevent warping, 12 cup muffin pan measures 15.75-inch by 11-inch; each muffin cup measures 2.75 diameter by 1.25-inch high, Dishwasher safe, however hand-washing is recommended to extend product life
Product price: $13.67
Product brand: Chicago Metallic
Target attributes: Size
Answer: attribute: size
value: None
source: None