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: Tree-Free Greetings 12-Count Christmas Card Set with Envelopes, 4" x 6", Frozen In Time Cardinals (93475)
Product description: Tree-Free Greetings strives to use the most sustainable materials and processes possible. Printed and assembled in the USA on 100 percent post consumer recycled uncoated paper, this sweet set of 12 EcoNotes Christmas cards feels great to the touch and takes ink beautifully. (Ballpoint pens work best on the lightly coated finish of the fully printed cards; testing your pen on a discrete area before writing is recommended). Vibrantly printed with Susan Knowles Jordan art, Tree-Free EcoNotes Notecard Sets make the perfect gift. Brighten someone's day, and brighten everyone's future with a sustainable Tree-Free gift today!
Product feature: Inside Greeting: Thinking of you. Happy Holidays., 12 4 x 6-inch notecards with color-coordinated envelopes, Vibrantly printed inside and out on 100 percent post consumer recycled paper, Paper made with wind power, processed chlorine free, green-E certified, Sustainable; made in the USA
Product price: $10.99
Product brand: Tree-Free Greetings
Target attributes: Quantity
Answer: attribute: quantity
value: 12-count
source: product title
attribute: quantity
value: set of 12 econotes
source: product description