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: Marc by Marc Jacobs Women's Front Zip Toe Cap Wedge Ankle Boot
Product description: Marc Jacobs reimagines vintage two-toned looks with this compact wedge boot., Marc Jacobs was born in New York City in 1963. A graduate of the Parsons School of Design, Marc Jacobs' original collections were based on simple concepts: a love for fashion and a commitment to quality. Those same principles remain the cornerstones of Marc Jacobs products today. Marc Jacobs' collections now include women's and men's clothing, shoes, fragrance, eyewear, watches, and home accessories.
Product feature: 100% Leather, Imported, Leather sole, Shaft measures approximately 6.5" from arch, Heel measures approximately 3.5", Boot opening measures approximately 9.75" around, Marc Jacobs reimagines vintage two-toned looks with this compact wedge boot., Package Dimensions: 12 x 8 x 4 inches, Shipping Weight: 2 pounds ( View shipping rates and policies ), ASIN: B00CJ5KJ3W, Item model number: 636997/42, Date first listed on Amazon: October 15, 2013, Domestic Shipping: Item can be shipped within U.S., International Shipping: This item is not eligible for international shipping. Learn More, Average Customer Review: 3.1 out of 5 stars 2 customer reviews
Target attributes: Shaft Height
Answer: attribute: shaft height
value: ankle boot
source: product title