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: Maxim Enterprise Black Steam
Product description: Every wooden train yard needs to have this Black Steam Locomotive # 5. Your little one can never have enough wooden train engines or cars. Just ask them.
Product feature: Manufactured from 100% hardwoods, Compatible with Thomas and Friends Wooden Railway, Compatible with Brio Wooden Train Products, Compatible with many other fine wooden train sets and wooden train accessories
Product price: $8.99
Product brand: Maxim Enterprise INC
Target attributes: Battery Type
Answer: attribute: battery type
value: None
source: None