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: Feiss F3060/3PN Corinne Orb Crystal Inlay Pendant Lighting, Chrome, 3-Light (17"Dia x 21"H) 180watts
Product description: The Feiss Corinne three light pendant in polished nickel enhances the beauty of your home with ample light and style to match today's trends. The modern orb silhouette of the Corinne Collection is interpreted in two distinct ways. In Polished Nickel, it features an Inlay Crystal detail along the inner surfaces for dramatic sparkle. In Oil Rubbed Bronze, hammered inlay detail embellishes the inner surfaces to catch light for a more rustic aesthetic. The center candles are attached by a hub giving the illusion theyre floating.
Product feature: CORINNE PENDANT DIMENSIONS: 20.75" Height x 17" Width, Weight 9.5lbs, LIGHT: 3-60 Watt Candelabra B10 Lights, Bulbs Not Included, 180 Total Watts, Included Chain: (1) 60" in Polished Nickel Finish, Wire: 180" Clear Wire, ETL Approved for Indoor Locations in US and Canada, MATERIAL: Aluminum, FINISH: Polished Nickel, CRYSTAL: Crystal Inlay
Product price: $13.35
Product brand: Feiss
Target attributes: Shade Material
Answer: attribute: shade material
value: crystal
source: product description
attribute: shade material
value: crystal
source: product feature
attribute: shade material
value: crystal
source: product title