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: JS Boutique Women's Sleeveless Long Jersey Gown with Beaded Trim
Product feature: 92% Polyester/8% Spandex, Imported, 95% Polyester/5% Spandex lining, Dry Clean Only, Side draped, Lace insert, Package Dimensions: 15.8 x 14.7 x 2.7 inches, Shipping Weight: 1.91 pounds, ASIN: B00I7NWQMW, Item model number: 264238, Date first listed on Amazon: April 28, 2014, Domestic Shipping: Item can be shipped within U.S., International Shipping: This item is not eligible for international shipping. Learn More, Average Customer Review: 4.5 out of 5 stars 3 customer reviews
Product brand: JS Boutique
Target attributes: Sleeve Style
Answer: attribute: sleeve style
value: sleeveless
source: product title