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: Billabong Men's Zenith Printed Tank Top
Product description: Jersey color blocked tank with soft hand print at pocket with flag label.
Product feature: 60% Cotton, 40% Polyester, Imported, Machine Wash, Jersey color blocked tank, Soft hand print at pocket with flag label, Package Dimensions: 8.4 x 6.2 x 2.3 inches, Shipping Weight: 5.6 ounces, ASIN: B013U2K00E, Item model number: M913EZEP, Date first listed on Amazon: August 13, 2015, Average Customer Review: 5.0 out of 5 stars 1 customer review
Target attributes: Sleeve Style
Answer: attribute: sleeve style
value: tank
source: product feature
attribute: sleeve style
value: tank
source: product description
attribute: sleeve style
value: tank top
source: product title