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

Input:
Product title: 0.2 Carat 4 Prong Stud Earrings in 14K Yellow Gold I-J Color VS2 Clarity Round Cut Diamond Earrings with push back setting
Product description: 0.2 Carat Diamond Stud Earrings in 14K Yellow Gold I-J Color VS2 Clarity Round Cut Diamond Earrings with push back setting. Diamond Weight is Approximate by 5%
Product feature: ASIN: B005LSGJOM, Item model number: EGD 1005, Date first listed on Amazon: March 23, 2012, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product brand: Diamond Stud Earrings
Target attributes: Silhouette
Answer: attribute: silhouette
value: stud
source: product description
attribute: silhouette
value: stud
source: product title
attribute: silhouette
value: stud
source: product brand