Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: KEM Arrow Jumbo Index Playing Cards
Product description: KEM brand playing cards are the finest playing cards in the world. Preferred by industry professionals, KEM cards are made of a unique blend of paper and plastic that provides superior flexibility and strength for long-lasting use.
Product feature: 100 percent cellulose acetate plastic - a unique blend of paper and plastic that provices superior flexibility and strength, A set-up consists of one Red and one Blue deck, The cards come in a hard black plastic Kem box, Superior flexibility and strength, Scuff and Break-Resistant
Product price: $22.99 - $118.07
Product brand: Kem Playing Cards
Target attributes: Recommended Age
Answer: attribute: recommended age
value: None
source: None