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: Ulla Popken Plus Size Iron-free Spread Collar Shirt
Product description: No muss, no fuss. Wash, dry, grab and go. Tailored with traditional spread collar and chest pocket. Button placket front. Adjustable button cuffs, shirttail hem. Woven of 51% rayon/49% polyester. Machine wash. Imported. Length: graded by size from 28" to 32".
Product feature: Machine wash, 51% rayon, 49% polyester, Length: graded by size from 28" to 32", Item #24432, ASIN: B00DIA5KE0, Item model number: 24432BKWS20/22, Date first listed on Amazon: June 20, 2013, Average Customer Review: 3.1 out of 5 stars 2 customer reviews
Target attributes: Neckline
Answer: attribute: neckline
value: spread collar
source: product description
attribute: neckline
value: spread collar
source: product title