Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: Gigabyte R9 290X GDDR5-4GB 2xDVI/HDMI/DP OC Graphics Card GV-R929XOC-4GD
Product description: Powered by AMD Radeon R9 290X GPU and integrated with industry's best 4GB GDDR5 memory and 512 bit memory interface
Product feature: WINDFORCE 3X 2 slot 450W cooling system, Smart fan control that can be switched between silent and performance modes, Core Clock: 1040 MHz - Memory Clock: 5000 MHz, Recommended Minimum System PSU 600W, Supports AMD Crossfire / HD3D / Eyefinity / Catalyst / GCN Architecture, Features DVI-D2 / HDMI / Display Port
Product price: $266.70
Product brand: Gigabyte
Target attributes: Type
Answer: attribute: type
value: graphics card
source: product title