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: Beer? Funny T-shirt Apparel, X-Large, Black
Product description: Available in Black with white print or White with black print. 5.6 & 6 oz., heavyweight 100% preshrunk cotton T-shirt. **Attention other sellers you need the UPC for this product to sell this product.*****
Product feature: Beer? T-shirt, 100% Cotton, T-Shirt Brands used for this design: Anvil, Hanes, Gildan, Jerzees or Fruit of the Loom, 5.6 & 6 oz., heavyweight 100% preshrunk cotton T-shirt., Available in Black with white print or White with black print
Product price: $12.99
Product brand: EYE CANDY SIGNS
Target attributes: Sleeve Style
Answer: attribute: sleeve style
value: None
source: None