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: Viva Womens Platform Stretch High Heels Stiletto Over The Knee Thigh Boots
Product description: These thigh high boots feature a high stiletto heel, hidden platform sole, pointed toe front, and a zip closure on the inner sides.
Product feature: Synthetic, Synthetic sole, Shaft measures approximately 21 from arch, Thigh High Platform High Heels, Side Zip Fastening, Hidden Platform Sole, Thigh High Design, High Stiletto Heel, Package Dimensions: 10 x 4 x 2 inches, Shipping Information: View shipping rates and policies, ASIN: B011VEV476, Date first listed on Amazon: July 17, 2015, Average Customer Review: 3.6 out of 5 stars 23 customer reviews
Product price: $39.99
Product brand: Viva
Target attributes: Heel Height
Answer: attribute: heel height
value: high heels
source: product title
attribute: heel height
value: stiletto
source: product description
attribute: heel height
value: stiletto
source: product feature
attribute: heel height
value: high heels
source: product feature