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

Input:
Product title: 12 in. Semi-Flush Mount with Wine Crystal Glass Shade
Product description: Bulb not included. Requires two 60 watt incandescent medium bulbs. UL and CUL listed. Warranty: One year. Black copper finish. Made in China. 12 in. Dia. x 11.25 in. H (5 lbs.). Assembly Instructions.
Product feature: Bulb not included, Requires two 60 watt incandescent medium bulbs, UL and CUL listed, Warranty: One year, Black copper finish
Product brand: Toltec Lighting
Target attributes: Shade Material
Answer: attribute: shade material
value: crystal
source: product title