Instruction: First, identify the target attributes from the provided list. Then, scan the product title, description, feature, and brand to extract the values associated with each target attribute. Finally, create a list of dictionaries, each containing the extracted attribute, its corresponding value, and the source where it was found.

Input:
Product title: Women's Classic Round Toe Black Ballet Slip On Flat With Bow
Product description: Stylish and adorable ballet flats in an easy slip on style! This shoe features a faux leather upper, classic round toe, bow accent and low flat heel. The black man-made sole is fabricated for lasting traction and long wear. Great with any outfit!
Product feature: Synthetic, Imported, Synthetic sole, Faux leather upper and lining, Classic round toe, Bow accent on toe, Synthetic sole with low flat heel, Imported, Shipping Information: View shipping rates and policies, ASIN: B00NJ4ZJAU, Item model number: VP SHOE FLT LTRBLK, Date first listed on Amazon: September 12, 2014, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product price: $20.99
Product brand: Palazzo Fashion
Target attributes: Toe Style
Answer: attribute: toe style
value: round toe
source: product description
attribute: toe style
value: round toe
source: product feature
attribute: toe style
value: round toe
source: product title