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: Mod-O-Doc Women's Long-Sleeve Shirred Dress
Product description: Long sleeve V-neck knee-length dress with shirred bodice
Product feature: 54% Cotton/44% Modal/2% Spandex, Imported, Machine Wash, V-neck dress featuring shirring at bodice and cuffs, Package Dimensions: 12 x 6.1 x 2.1 inches, Shipping Weight: 9.6 ounces, ASIN: B011CBVEZA, Item model number: 445-16055-001, Date first listed on Amazon: October 28, 2015, Average Customer Review: 4.5 out of 5 stars 2 customer reviews
Target attributes: Neckline
Answer: attribute: neckline
value: v-neck
source: product description
attribute: neckline
value: v-neck
source: product feature