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: Calvin Klein Women's Sleeveless Striped Side-Ruched Dress
Product description: Sleeveless sheath dress in multicolored-stripe patterning featuring gathered side, Side ruched striped sheath dress
Product feature: 63% Polyester/33% Rayon/4% Spandex, Imported, Dry Clean Only, Sleeveless sheath dress in multicolored-stripe patterning featuring gathered side, Package Dimensions: 20.2 x 10.8 x 3 inches, Shipping Weight: 14.4 ounces, ASIN: B00PROMX3Q, Item model number: CD4X2202, Date first listed on Amazon: December 20, 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: 3.8 out of 5 stars 4 customer reviews
Target attributes: Sleeve Style
Answer: attribute: sleeve style
value: sleeveless
source: product feature
attribute: sleeve style
value: sleeveless
source: product title
attribute: sleeve style
value: sleeveless
source: product description