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: Spring Step Meteorite
Product description: High quality leather upper. Classic clog with modern decorative stich detailing. Removable comfort insole. Polyurethane outsole with a 2" heel height. The lovely shoe provides excellent flexibility, support and stability. Classic and casual style. Comfortable and can accommodate a custom orthotic. Naturally shock absorbent and long lasting.
Product feature: Leather, Leather upper, Slip-on construction, Removable comfort insole, Polyurethane outsole, Leather, Shipping Weight: 3 pounds, ASIN: B00NF8OO1A, Date first listed on Amazon: September 9, 2014, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product brand: Spring Step
Target attributes: Silhouette
Answer: attribute: silhouette
value: clog
source: product description