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: Nine West Workbook Pull On Ankle Short Slouchy Boot Shoe Suede Brown
Product description: Ankle boots from "Nine West" Style name: "Workbook" Medium width Heel height: 1" Shaft height from arch: about 6 1/2" Color according to manufacturer: "Dark Brown" Suede upper Manmade sole These boots are new and come in their original packaging. Email with questions!
Product feature: Synthetic sole, Shaft measures approximately 6.5 from arch, Ankle boots from "Nine West" Style name: "Workbook", Medium width Heel height: 1" Shaft height from arch: about 6 1/2", Color according to manufacturer: "Dark Brown", Suede upper Manmade sole, These boots are new and come in their original packaging., Package Dimensions: 12.9 x 11.9 x 4.2 inches, Shipping Weight: 1.75 pounds, ASIN: B0059M2U52, Date first listed on Amazon: December 27, 2012, Average Customer Review: 3.0 out of 5 stars 1 customer review
Target attributes: Type
Answer: attribute: type
value: boot
source: product title
attribute: type
value: shaft height
source: product description
attribute: type
value: shaft height
source: product feature
attribute: type
value: boots
source: product feature
attribute: type
value: boots
source: product description