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: MSI Computer Corp. R7970-2PMD3GD5 Graphics Card
Product description: MSI ATI Radeon HD7970 3GB DDR5 DVI/HDMI/2x Mini DisplayPort PCI-Express Video Card
Product feature: Chipset: ATI Radeon HD7970, Engine Clock: 925 MHz, Video Memory: 3GB DDR5, Memory Clock: 5500 MHz, Max. Resolution: 2560 x 1600
Product brand: MSI
Target attributes: Type
Answer: attribute: type
value: graphics card
source: product title
attribute: type
value: video card
source: product description