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: 1986 Liberty 2 Coin Proof Cameo Commemorative Coin Set
Product feature: 1986-S Proof Cameo UNITED STATES Liberty Coin (Ellis Island) Set, The Dollar Coin is Silver and the Half Dollar is Clad, One 1986-S Statue of Liberty Commemorative Proof Silver Dollar, One 1986-S Statue of Liberty Commemorative Proof Half Dollar
Product brand: JABB Coin Consultants
Target attributes: Type
Answer: attribute: type
value: coin
source: product title
attribute: type
value: half dollar
source: product feature
attribute: type
value: proof
source: product title
attribute: type
value: coin
source: product brand
attribute: type
value: silver
source: product feature
attribute: type
value: coin
source: product feature
attribute: type
value: proof
source: product feature