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: Set of 3 Delft Ball Christmas Ornaments
Product description: These 3" ball delft blue Christmas ornaments are decorated with a windmill decoration, canalhouses, and a Dutch landscape including a windmill. Painted in the typically-Dutch delft style, they will be adorable on your tree.
Product feature: Delft blue ball ornament, 3" tall, set of 3
Product brand: Dutch American Imports
Target attributes: Material
Answer: attribute: material
value: None
source: None