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: Schecter Omen Active 6-String Electric Guitar, Satin Black
Product description: Take the world-famous Omen Guitar Series from Schecter and add either an active pickup and you have a real tone monster at a n unbelievable price
Product feature: Ebony Fingerboard, Schecter Custom String-Thru Body Bridge, Mahogany Body with Quilted Maple Top
Product brand: Schecter
Target attributes: Guitar Type
Answer: attribute: guitar type
value: electric guitar
source: product title