Instruction: First, identify the target attributes from the provided list. Then, scan the product title, description, feature, and brand to extract the values associated with each target attribute. Finally, create a list of dictionaries, each containing the extracted attribute, its corresponding value, and the source where it was found.

Input:
Product title: Premium Edition Tournament Size Dominoes With Black Dots & Spinners
Product description: Packaged in a heavy-duty, black vinyl, ostrich grained leatherette, case with a snap lock closure. Dominoes include brass spinner posts in the center of the dominoes to allow the facing of the domino to be easily spun in any direction. A really special feature for discriminating players. Domino Size: 1-3/32" x 2-3/16" x ?" thick. Rules are included for eight popular fun games: Straight Dominoes, 42, Moon, 84 (takes 2 sets), Solitaire, Chickenfoot?, Mexican Train? and Super Dominoes?. Note that this set does not include special tiles for playing the SPINNER game.
Product feature: Premium Double 6 Tournament Black Dot Dominoes with Spinners is suitable for 1 or more players, ages 6 and up, playing time 20 minutes
Product brand: Puremco
Target attributes: Age Group
Answer: attribute: age group
value: None
source: None