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: Under Armour Women's Charged Cotton Tactical T-Shirt
Product description: Charged Cottonhas the comfort of cotton, but dries much faster. Material wicks sweat & dries really fast. Has the burn properties of traditional cotton - no melt/no drip. Raglan sleeves . Classic crew neck collar. Back locker tag.
Product feature: 100% Cotton, Imported, Charged Cotton has the comfort of cotton, but dries much faster, Material wicks sweat & dries really fast, Has the burn properties of traditional cotton - no melt/no drip, Raglan sleeves, Classic crew neck collar
Product price: $15.59 - $24.99
Product brand: Under Armour
Target attributes: Neckline
Answer: attribute: neckline
value: crew neck
source: product description
attribute: neckline
value: crew neck
source: product feature