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: Code VIII Women's Yoki-3 Flat
Product description: Flat
Product feature: Synthetic, Platform measures approximately 0.5, Moccasin Style, Package Dimensions: 11.5 x 4.5 x 4 inches, Shipping Weight: 7.8 ounces, ASIN: B00CTWC6E0, Date first listed on Amazon: May 16, 2013, Average Customer Review: 2.0 out of 5 stars 1 customer review
Product brand: Code VIII
Target attributes: Heel Height
Answer: attribute: heel height
value: flat
source: product title
attribute: heel height
value: flat
source: product description