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: ANNA JOJO-1 Women's Lace Up Flat Bottom High Top Oxford Ankle Bootie, Color:TAN, Size:5.5
Product feature: ASIN: B00GJKQCLG, Date first listed on Amazon: November 15, 2013, Average Customer Review: 1.6 out of 5 stars 2 customer reviews
Product brand: ANNA
Target attributes: Silhouette
Answer: attribute: silhouette
value: oxford
source: product title