Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: Smartware Silicone Loaf Pan, Red
Product description: Smartware bakeware transfers heat more efficiently than conventional pans-that's why the best pastry chefs in Europe have relied on it for years. Smartware bakeware heats evenly and cools quickly. Even heat transfer means everything you cook and bake-from bread to lasagna, roasts to fresh cookies-will cook more evenly. You'll eliminate hot spots and cold spots. Everything you cook will have better results every time. You can store it in the fridge or freezer, use it in the oven or microwave and it is always dishwasher safe. Also, Smartware bakeware allows you to use less fat and oil when you cook, lowering calories and increasing flavor. Now that's smart.
Product feature: 9-Inch loaf pan with storage cover, designed to withstand temperatures from 58-degree f below to 428-degree Fahrenheit-without warping, melting or flaking, Revolutionary silicone bakeware with temperflex is better than metal; high gloss, non-stick finish will not retain odors or flavors, Even heat distribution, quick and even cooling, Flexible for easy removal of baked goods and goes from oven to freezer in a flash, Microwave and dishwasher safe
Product brand: Smartware
Target attributes: Material
Answer: attribute: material
value: silicone
source: product feature
attribute: material
value: silicone
source: product title