Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: Badgley Mischka Collection Women's Bell Sleeve Gown
Product description: Metallic embroidery shines from delicate tulle on this Badgley Mischka Collection gown, creating a glamorous illusion effect. The floor-length silhouette is cut from puckered material for a hint of texture. The sheer bell sleeves end in scalloped cuffs. Illusion yoke. Hidden back zip. Lined.
Product feature: Imported, Zipper closure, Puckered loose weave, 100% polyester, Dry clean, Width 62in / 157.5cm, from shoulder, Package Dimensions: 19.3 x 14.3 x 3.3 inches, Shipping Weight: 1.7 pounds, ASIN: B00K3DWP0M, Item model number: EG1322-114, Date first listed on Amazon: July 17, 2014, Average Customer Review: 3.0 out of 5 stars 1 customer review
Target attributes: Length
Answer: attribute: length
value: gown
source: product title
attribute: length
value: floor-length
source: product description
attribute: length
value: gown
source: product description