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: FHR Leanne Knee High Espadrille Flat Zipper Gladiator Elastic Strap Shoe Denim Nude
Product feature: Denim, Knee High, Open Toe, Elastic Straps, Back Zipper, ASIN: B00WW1GMLQ, Date first listed on Amazon: April 30, 2015, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product brand: FHR
Target attributes: Heel Height
Answer: attribute: heel height
value: flat
source: product title