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: Jack Daniels Men's Daniel's Old No. 7 Short Sleeve T-Shirt - 15261488Jd-89
Product description: Jack Daniel's has long helped people love country living. This Jack Daniel's logo short-sleeve black tee shirt features the brand's iconic logo throughout in white screen print. This is the kind of shirt a cowboy can have some real fun in.
Product feature: 100% Cotton, Made in USA, Made Of 100% Cotton Jersey, Short sleeve style, Accessories not included, Product Dimensions: 14 x 8 x 1 inches, Shipping Weight: 8 ounces ( View shipping rates and policies ), ASIN: B019J9PDHC, Item model number: 294U98, Date first listed on Amazon: November 17, 2015, Average Customer Review: 3.9 out of 5 stars 3 customer reviews
Product price: $17.49 - $25.63
Product brand: Jack Daniels
Target attributes: Sleeve Style
Answer: attribute: sleeve style
value: short-sleeve
source: product description
attribute: sleeve style
value: short sleeve
source: product feature
attribute: sleeve style
value: short sleeve
source: product title