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: Chuggington Wooden Railway Musical Car
Product description: Hook up this fun and vibrant colored Musical Car to any engine or vehicle and sing along as it plays the popular Chuggington theme song!, Hook up this fun and vibrant colored Musical Car to any engine or vehicle and sing along as it plays the popular Chuggington theme song.
Product feature: Plays Chuggington theme song, Real Wood Construction, Easy-to-connect magnets, Compatible with other wooden track systems, Ages 2 years and up
Product price: $18.99
Product brand: TOMY
Target attributes: Battery Type
Answer: attribute: battery type
value: None
source: None