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: Butter Women's Twister Peep-Toe Pump
Product description: Butter was born when designer Nancy Geist and business partner Lee Riech recognized a void in the shoe market for flirty, feminine designs. Since its debut in 2007, Butters recipe for success has evolved from the perfect peep-toe pump to chic, collectible skimmers and flats. Devout followers of Butter praise the line for its wearable styles and impeccable, of-the-moment details. Geist and Riech are dedicated to creating timeless shoes that can be reimagined each season, while still maintaining the unbeatable quality and perfect fit that have made Butter such a smooth success.
Product feature: 100% Patent, Leather sole, Heel measures approximately 3 3/4", Package Dimensions: 11.6 x 6.6 x 3.7 inches, Shipping Weight: 1.4 pounds, ASIN: B0027IR0V0, Item model number: TWISTER, Date first listed on Amazon: August 11, 2009, Domestic Shipping: Item can be shipped within U.S., International Shipping: This item is not eligible for international shipping. Learn More, Average Customer Review: 5.0 out of 5 stars 1 customer review
Target attributes: Type
Answer: attribute: type
value: shoes
source: product description
attribute: type
value: shoe
source: product description