Instruction: Using the product's title, description, features, price, and brand, identify and retrieve the values associated with a specified set of target attributes. Output the extracted values along with their respective sources (e.g., title or feature) indicating where each value was found.

Input:
Product title: Dasein Faux Buffalo Leather Stitched, Adjustable Top Satchel, Shoulder Bag, Handbag, Tablet Bag, iPad Bagwith Buckle Accents
Product description: This flat-bottomed satchel is the new office favorite. With an adjustable removable shoulder strap and front buckle accents that conveniently unsnap to give you instant access to the silky, polka-dot interior. This style is a fashionable pairing from jeans and flats to even the cleanest lines of classic suits.
Product feature: Dimensions: 13" x 10" x 4", Drop Length: Drop (distance from shoulder or handle to top of bag): 52", Origin: Imported, Product Dimensions: 13 x 10 x 4 inches, Shipping Weight: 3.1 pounds, ASIN: B00NTS1CAW, Date first listed on Amazon: September 23, 2014, Average Customer Review: 4.0 out of 5 stars 1 customer review
Target attributes: Pattern
Answer: attribute: pattern
value: polka-dot
source: product description