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: Halo Master Chief Women's Tank Top Gray Small
Product feature: ASIN: B00L3YBQHS, Item model number: WTTMASTERCHIEF123SGRY, Date first listed on Amazon: June 19, 2014, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product brand: GEEK TEEZ
Target attributes: Sleeve Style
Answer: attribute: sleeve style
value: tank top
source: product title