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: Transformer Adventure TAV21 Optmus Prime by Takaratommy
Product description: Transformers Adventure - TAV21 - Optimus Prime
Product feature: Transformers Adventure - TAV21 - Optimus Prime
Product price: $100.70
Product brand: TAKARATOMMY
Target attributes: Minimum Age
Answer: attribute: minimum age
value: None
source: None