Instruction: Using the product's title, description, features, price, and brand, identify and retrieve the values associated with a specified set of target attributes. Output the extracted values along with their respective sources (e.g., title or feature) indicating where each value was found.

Input:
Product title: Whse of Tiffany Rl7992 Reenalia 3-Light Flush Mount Light, 16" X 16" X 6"
Product description: this crystal chandelier transforms the light in your dining room into an intricate dance of shadows and light. The omnidirectional illumination provided by this contemporary chandelier strikes the reflective material to create a beguiling spectacle that's sure to impress your meal-time guests.
Product feature: Fixture finish: Chrome, Materials: Metal, crystal, Requires: Five (5) 40-watt bulbs, Setting: Indoors Fixture finish: Chrome Materials: Metal, crystal, Number of lights: 3 Requires: Three (3) 40-watt bulbs (bulbs not included), Dimensions: 16 inches in diameter x 6 inches high
Product brand: Whse of Tiffany
Target attributes: Shade Material
Answer: attribute: shade material
value: crystal
source: product description
attribute: shade material
value: crystal
source: product feature