Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: XFX nVidia GeForce GTS 250 512 MB DDR3 Standard 2DVI PCI-Express Video Card GS250XYDFC
Product description: The XFX NVIDIA GeForce GTS 250 graphics card, a singularly powerful card that pushes its 128 cores to the limit, making it one of the fastest graphics cards available. Better still, it is designed for up to triple the smack down power with 2- or 3-way SLI, guaranteeing that it is one of the most attractively priced power players on the market today.
Product feature: NVIDIA unified architecture, Full Microsoft DirectX 10 Shader Model 4.0 support, NVIDIA SLI-Ready technology, 512MB Memory, GPU-accelerated nVidia PhysX gaming effects
Product brand: XFX
Target attributes: Cooling Type
Answer: attribute: cooling type
value: None
source: None