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: Oakley Men's Roman Polo
Product description: Set-in sleeves with forward shoulder seams. Tonal cover stitch on shoulder seams and placket detail. Oakley quality and style.
Product feature: 100% Polyester, Imported, Set-in sleeves with forward shoulder seams. Tonal cover stitch on shoulder seams and placket detail, O hydrolix fabric manages moisture and dries quickly to help keep you comfortable, Anti-bacterial action reduces odor-causing microbes
Product price: $11.78 - $74.75
Product brand: Oakley
Target attributes: Neckline
Answer: attribute: neckline
value: polo
source: product title