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: 1/3 ct Diamond Hoop Earrings in Sterling Silver & 14K Rose Gold
Product description: Top off daytime and evening looks alike with these twinkling diamond hoops. Round-cut diamonds totaling 1/3 ct are set in sterling silver and finished with 14K rose gold hearts at the back. Pieces measure 7/8 inches in diameter.
Product feature: 1/3 ct Round-Cut Diamonds, Crafted in Sterling Silver & 14K Rose Gold, Measures 7/8 Inches in Diameter, Package Dimensions: 2.1 x 2.1 x 1.6 inches, Shipping Weight: 0.96 ounces, ASIN: B00X8NE9YE, Item model number: ESW84583APNHZ, Date first listed on Amazon: May 6, 2015, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product brand: Finecraft
Target attributes: Silhouette
Answer: attribute: silhouette
value: hoop
source: product title
attribute: silhouette
value: hoops
source: product description