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: Body Candy Solid 14k Yellow Gold Textured Disc Nose Stud Ring 20 Gauge
Product description: Classic and timeless nose screw ring offers a simple round disc design accented with a cut pattern. Nose ring is crafted from solid 14k yellow gold. Specifications: 20 Gauge (.8mm), 1/4" (6mm), Solid 14k Yellow Gold
Product feature: Gauge 20 gauge; .8 millimeters, Length 1/4 inch; 6 millimeters, 14k solid gold nose stud, Polished finish; nostril screw, Shipping Information: View shipping rates and policies, ASIN: B003L12MVU, Item model number: AU-854, Date first listed on Amazon: May 5, 2010, Average Customer Review: 3.7 out of 5 stars 7 customer reviews
Product price: $15.93
Product brand: Body Candy
Target attributes: Design
Answer: attribute: design
value: stud
source: product feature
attribute: design
value: nose screw
source: product description
attribute: design
value: stud ring
source: product title