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: Jug O Steel Black and Purple Steel Tip Bar Darts - 100 Pieces
Product description: Jug O Steel Black and Purple Darts
Product feature: Affordable purple steel tip bar dart, 3 Piece construction allows for easy replacement of parts, Set of 100 darts - 50 Black and 50 Purple, Made using Bottelsen's Super Alloy brass alternative for the grip, All darts come pre-assembled
Product brand: Bottelsen
Target attributes: Type
Answer: attribute: type
value: steel
source: product description
attribute: type
value: steel
source: product title
attribute: type
value: steel
source: product feature