Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: Genuine Blue Topaz 925 Sterling Silver Butterfly Dangle Earrings
Product description: Genuine Blue Topaz 925 Sterling Silver Butterfly Dangle Earrings
Product feature: Product Dimensions: 0.9 x 0.5 inches, Shipping Weight: 0.32 ounces, ASIN: B00NCZ1554, Item model number: ER0088814-SilverShake, Date first listed on Amazon: September 7, 2014, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product brand: Silvershake
Target attributes: Silhouette
Answer: attribute: silhouette
value: dangle
source: product title
attribute: silhouette
value: dangle
source: product description