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: Yu-Gi-Oh! - Blackwing - Elphin the Raven (DP11-EN005) - Duelist Pack 11: Crow - 1st Edition - Rare
Product description: Yu-Gi-Oh! is a strategic trading card game in two players Duel each other using a variety of Monster, Spell, and Trap Cards to defeat their opponent's monsters and be the first to drop the other's Life Points to 0. Card Name : Blackwing - Elphin the Raven Card Type : Effect Monster Card Number : DP11-EN005 Set : Duelist Pack 11: Crow Attack/Defense : 2200/1200 Attribute : Dark Level : 6 Monster Type : Winged Beast Passcode : 11613567 Card Text : If you control a face-up "Blackwing" monster, you can Normal Summon this card without Tributing. When this card is Normal Summoned, you can change the Battle Position of 1 monster your opponent controls.
Product feature: A single individual card from the Yu-Gi-Oh! trading and collectible card game (TCG/CCG)., This is of Rare rarity., From the Duelist Pack 11: Crow set., You will receive the 1st Edition version of this card.
Product price: $0.49
Product brand: Yu-Gi-Oh!
Target attributes: Game
Answer: attribute: game
value: yu-gi-oh!
source: product brand
attribute: game
value: yu-gi-oh!
source: product feature
attribute: game
value: yu-gi-oh!
source: product title
attribute: game
value: yu-gi-oh!
source: product description