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: 6' 3.5mm Stereo (M) to 3.5mm Stereo (M) Audio Cable (Black)
Product description: Headphones are okay for your own personal listening pleasure, but what if you want everyone to hear? Plug this 6-foot 3.5 mm stereo cable into a set of speakers, and everyone can enjoy the music.Use this cable to connect your CD player, MP3 player, iPod, DVD player, laptop -- pretty much any device with audio -- to a set of external speakers. Most audio devices come with a 3.5 mm stereo audio output jack, so this is a great cable to have on hand.Order today!
Product feature: 6-Foot 3.5 mm Stereo Male to Male Cable General Features: 6-foot length Black cable, Male to Male connectors 3.5 mm stereo audio jack on each end
Product price: $4.97
Product brand: Generic
Target attributes: Audio Channels
Answer: attribute: audio channels
value: headphones
source: product description
attribute: audio channels
value: stereo
source: product description
attribute: audio channels
value: stereo
source: product feature
attribute: audio channels
value: stereo
source: product title