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: Men's Rage Against The Machine Logo O-neck Tees Black
Product description: Best Graphic Rage Against The Machine Logo Is 100% Preshrunk Cotton Print T-shirt. If You Are In Between Sizes, Please Choose Larger Tee.
Product feature: 100% Pre-Shrunk Cotton., Professionally Printed Super Soft Tshirts; Well Fit And Feel., Short Sleeve Crew Neck T-shirt, Twin Needle Sleeve And Bottom Hems., Within Two Adjacent Size, Choose The Bigger One, It May Be More Suitable For You, The Item Usually Need About 7 To 12 Days To Arrive, But Sometimes May Faster., Shipping Weight: 9 ounces, ASIN: B014OOPIWW, Date first listed on Amazon: August 31, 2015, Average Customer Review: 2.0 out of 5 stars 1 customer review
Product brand: SJWL Cool-Tee
Target attributes: Neckline
Answer: attribute: neckline
value: o-neck
source: product title
attribute: neckline
value: crew neck
source: product feature