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: Blueberi Boulevard Baby Girls' Dots Dress Set
Product feature: 100% Polyester, Imported, Machine Wash, Cardigan- 100 percent cotton, Dots cardigan dress set, Package Dimensions: 9.2 x 7.8 x 1.4 inches, Shipping Weight: 6.4 ounces, ASIN: B00Y37VGTK, Item model number: AMB13865, Date first listed on Amazon: August 26, 2015, Average Customer Review: 3.0 out of 5 stars 2 customer reviews
Product brand: Blueberi Boulevard
Target attributes: Pattern
Answer: attribute: pattern
value: dots
source: product feature
attribute: pattern
value: dots
source: product title