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: Karyn's Collection Woven Ballet Flats
Product description: Women's Ballerina Ballet Flat Shoes with Weave-Like Design
Product feature: Manmade, Rubber sole, Platform measures approximately .25", Embossed Weave-Like Pattern, Easy Slip on Style, Platform measures approximately 0.25", Imported, Great with Any Outfit, Package Dimensions: 11.2 x 4.2 x 3.5 inches, Shipping Weight: 11.2 ounces, ASIN: B00VSE4YB8, Item model number: OSITOSSHOES_FWD-09-W_SILVER_8.5, Date first listed on Amazon: April 7, 2015, Average Customer Review: 4.5 out of 5 stars 4 customer reviews
Product brand: Karyn's Collection
Target attributes: Dance Shoe Style
Answer: attribute: dance shoe style
value: ballet
source: product description
attribute: dance shoe style
value: ballet
source: product title