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: French Toast Boys' Long Sleeve Gingham Shirt with Tie
Product description: Boy's long sleeve woven shirt with tie. Button down front placket and buttons at cuffs.
Product feature: 55% Cotton/45% Polyester, Imported, Machine Wash, Boy's long sleeve shirt with tie, Dressing up made easy, Adjustable tie included, Soft cotton blend, Durable quality that lasts, Package Dimensions: 9.7 x 8.1 x 0.7 inches, Shipping Weight: 4 ounces, ASIN: B00Z9EHP0K, Date first listed on Amazon: October 17, 2015, Average Customer Review: 5.0 out of 5 stars 1 customer review
Target attributes: Sleeve Style
Answer: attribute: sleeve style
value: long sleeve
source: product description
attribute: sleeve style
value: long sleeve
source: product title
attribute: sleeve style
value: long sleeve
source: product feature