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

Input:
Product title: Art Glass Dome Shade - Lipless with 1-5/8-Inch Fitter Opening
Product description: Art Glass Dome Shade - Lipless with 1-5/8-Inch Fitter Opening Art glass dome shade with warm brown tones. The glass measures 4-inches on the bottom, by 1-5/8 inches on the top, and 6-inches in height with a fitter opening of 1-5/8.This glass shade is meant to be installed on fixtures with a medium base socket. A socket ring is required if installed facing down. If installed facing up a socket ring may not be required. 6 in x 4 in. Design Classics Art Glass Dome Shade - Lipless w/ 1-5/8-Inch Fitter Opening - Brown Lamp - 6 in X 4 In.
Product feature: Height: 6 inches Width: 4 inches Top Width: 1.62 inches Bottom Width: 4 inches Fitter: 1.625, Shade Color: Santa Ana - Glass Treatment: Mouth Blown, Variations with art glass are typical and contribute to the unique beauty so no two shades will be exactly alike., Fixtures when properly installed and under normal conditions of use are warranted to be free from defects in materials and workmanship for ONE YEAR from date of sale., Free shipping on purchases of $50.00 or more Here's how (restrictions apply)
Product price: $17.55
Product brand: Design Classics
Target attributes: Material
Answer: attribute: material
value: glass
source: product title
attribute: material
value: glass
source: product feature
attribute: material
value: glass
source: product description