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: Evan Picone Embellished Draped One Shoulder Chiffon Dress
Product description: Dress features full lining, draped one shoulder silhouette, embellished detailing at side, matte chiffon fabric, and a concealed side zipper with hook & eye closure.
Product feature: 100% Polyester, Full lining, Concealed side zipper, Draped one shoulder, Matte chiffon fabric, Concealed side zipper, Product Dimensions: 14 x 10 x 2 inches, Shipping Weight: 6.4 ounces, ASIN: B00KVM7WC6, Date first listed on Amazon: June 9, 2014, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product brand: Evan Picone
Target attributes: Shoulder Style
Answer: attribute: shoulder style
value: one shoulder
source: product description
attribute: shoulder style
value: one shoulder
source: product feature
attribute: shoulder style
value: one shoulder
source: product title