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: Red Co Serverware 6-Piece Mini Martini Footed Dessert Glass Set, 5.5 Ounce
Product description: Works well for anything from serving dessert to food prep and storage. These mini bowl will without a doubt mix in well with your decor because its clear glass construction is both so versatile and so appealing.
Product feature: Perfect for a small dessert or a side dish presentation, Classic martini form is both refined and festive - great for a celebration meal or everyday snacks, Made of high quality glass, sturdy and durable, Capacity: 5.5 oz, Dimensions: 4.2"Dia(top) x 2.5"Dia(bottom) x 3.2"H
Product price: $22.80
Product brand: Red Co.
Target attributes: Material
Answer: attribute: material
value: glass
source: product title
attribute: material
value: glass
source: product feature
attribute: material
value: glass
source: product description