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: Bellagio Casino Las Vegas Brown Playing Cards
Product description: Bellagio Casino Las Vegas Brown Playing Cards
Product feature: This Deck Was Used at the Casino!, Bellagio Casino Las Vegas Brown Playing Cards
Product brand: Old Vegas Poker Chips
Target attributes: Recommended Age
Answer: attribute: recommended age
value: None
source: None