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: FASHION FOCUS KAVA-22 Women Casual Slip On Thong Toe Stacked Mid Wedge Sandals, Color:COGNAC, Size:9
Product feature: Imported, Package Dimensions: 11 x 4.2 x 4.1 inches, Shipping Weight: 1 pounds, ASIN: B00YZMW6SS, Item model number: KAVA-22, Date first listed on Amazon: March 30, 2016, Average Customer Review: 4.5 out of 5 stars 3 customer reviews
Product brand: Fashion Focus
Target attributes: Heel Style
Answer: attribute: heel style
value: wedge
source: product title