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: Upgradelights Lamp Shade Small Brass Clip on Lamp Shade 8 Inch Eggshell Silk (5x8x6)
Product description: 5 x 8 x 6 All sizes are top diameter by the bottom diameter and then the height Top quality frames Fantastic eggshell shantung materials clips on to A-19 bulbs
Product feature: Free LED bulb included with purchase, Shade Dimensions: 5 inch top x 8 inch bottom x 6 inch slant height, Top quality frames, Shade Dimensions: 5 inch top x 8 inch bottom x 6 inch slant height Top quality frames, American family owned small business, USA based customer service. Always next day free shipping from NC.
Product price: $26.29
Product brand: Upgradelights
Target attributes: Shape
Answer: attribute: shape
value: None
source: None