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: Think Fun Subtrax
Product description: Multi-level challenge peg solitaire game!, In this twist on a classic favorite, players place pegs on the game board to match the illustrations depicted on various challenge cards. The object is to jump over a field of blue pegs until only the orange peg is left standing. 40 ingenious challenges gradually increase in complexity.
Product feature: Self-contained game board with storage drawer, Four levels of play, Forty challenge cards with solutions, Teaches sequential thinking, problem solving, and critical thinking, For ages 8 years and above
Product brand: Think Fun
Target attributes: Age Group
Answer: attribute: age group
value: None
source: None