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: Sunny Fashion Girls Dress A-Line Round Collar Sleeveless Pleated Bodice White
Product description: Quality princess girls dress, suitable for wedding, party, evening and everyday dress. Round collar, bow tie, pleated lace bodice and flower lace trim. Zipper back. Hand wash. Knee length. Following size means age ranges for girls, They are for general guidance only. For most accurate fit, we recommend checking detailed measurement before purchase., Size Chart, Size Bust Waist Length 5 24.4''/62cm 22.8''/58cm 23.6''/60cm 6 25.2''/64cm 23.6''/60cm 25.2''/64cm 7-8 26.0''/66cm 24.4''/62cm 27.2''/69cm 9-10 26.8''/68cm 25.2''/64cm 28.3''/72cm 11-12 28.3''/72cm 26.8''/68cm 31.5''/80cm
Product feature: Sizes for Girls ( 5-12 ) Years, Please read detail size measurement in Product Description before purchase, Polyester, Shipping Information: View shipping rates and policies, ASIN: B00YHTC1W0, Item model number: CNUS0FT41-P, Date first listed on Amazon: May 29, 2015, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product price: $7.99
Target attributes: Neckline
Answer: attribute: neckline
value: round collar
source: product description
attribute: neckline
value: round collar
source: product title