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: HIS R7 250 iCooler Boost Clock 1GB GDDR5 PCI-E HDMI/SLDVI-D/VGA Graphics Card H250F1G
Product description: The card is equipped with iCooler, making it extremely quiet and noise level is less than 28dB. HIS R7 250 iCooler 1GB features Boost Clock is faster, iCooler is Quieter, user-friendly iTurbo. The card has the latest Boost Clock technology, providing extra performance for the most demanding games and applications!
Product feature: Core Speed 1000 MHz (Boost Clock 1050 MHz), 1024 MB Memory GDDR5, HDMI Max Resolution 4096x2160, VGA Max Resolution 2048x1536
Product brand: HIS
Target attributes: Video Memory Type
Answer: attribute: video memory type
value: gddr5
source: product title
attribute: video memory type
value: gddr5
source: product feature