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: Forever Women's Buckle Strap Block Heel Ankle Booties
Product feature: Imported, Package Dimensions: 10.5 x 9.8 x 4.3 inches, Shipping Weight: 2.1 pounds, ASIN: B01B60V858, Date first listed on Amazon: August 15, 2016, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product brand: Forever
Target attributes: Shaft Height
Answer: attribute: shaft height
value: booties
source: product title