Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: Fireman Curtain Valance
Product description: 70 inches wide. Valance measure 18 inches high..
Product feature: 70 inches wide, Valance measure 18 inches high.
Product brand: Pem America
Target attributes: Valance Style
Answer: attribute: valance style
value: None
source: None