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: LOVEBEAUTY? Women's Stretchy Ruffle Sleeveless Long Prom Dresses Burgundy US 18
Product description: Long prom dresses, stretchy with ruffle decoration, sleeveless and backless
Product feature: Strechy Fabric, Sleeveless, Spaghetti Strap, Slit Design, Floor Length, Package Dimensions: 9.9 x 6.5 x 3 inches, Shipping Weight: 11.2 ounces, ASIN: B012RN257I, Item model number: 2014620001-US 18-Burgundy, Date first listed on Amazon: July 28, 2015, Average Customer Review: 4.0 out of 5 stars 1 customer review
Product brand: LOVEBEAUTY
Target attributes: Pattern
Answer: attribute: pattern
value: None
source: None