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: Jasmincc Men's Steven yeun The Walking Dead Character Portrait Glenn Rhee T-Shirts
Product description: This Short Sleeve T-Shirts Would Be The Best Gift For Yourself,Standard Us Size And Printed With Eco-Friendly.Versatile And Comfortable Fit Outdoor,Indoor,Sports,Running,Climbing,Walking,Party Etc.
Product feature: Machine Wash, Short Sleeve Round Neck, Printed Graphic Logo On Front, 100% Cotton, Shipping Weight: 12 ounces, ASIN: B01CJYSRDG, Date first listed on Amazon: March 4, 2016, Average Customer Review: 3.3 out of 5 stars 8 customer reviews
Product brand: Jasmincc
Target attributes: Sleeve Style
Answer: attribute: sleeve style
value: short sleeve
source: product feature
attribute: sleeve style
value: short sleeve
source: product description