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: Aiwa NSX-A888 Compact Stereo System (Discontinued by Manufacturer)
Product description: 200 watts, 3 cd changer, electronic graphic eqalizer w/5 presets and 5 manual settings, digital signal processor, Resr surround spkr outputs, full logic dual auto reverse cassette deck, 3 way spkrs, built in dual powered subwoofers, BBE system, full function remote control
Product feature: 200 watts total output power, Built-in powered subwoofers with 80 watts per channel, Electronic graphic equalizer with 5 preset and 5 custom settings, 3-Disc auto changer, Dual auto-reverse cassette deck
Product brand: Aiwa
Target attributes: Stereo System Type
Answer: attribute: stereo system type
value: None
source: None