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: HP 2140 Mini Netbook 10.1 - KS157UTABA
Product description: Operating system: Genuine Windows XP Home Specialized Design: HP 3D DriveGuard Processors available: Intel Atom Processor N270 (1.60 GHz, 512 KB L2 cache, 533 MHz FSB) Chipset: Mobile Intel 945GSE Express Memory: 1 GB 800 MHz DDR2 SDRAM. Memory upgrade - Supports up to 2 GB (one SODIMM slot)Memory slots - 1 DIMM. Storage: Hard drive - 160 GB 5400 rpm SATA Graphics and Input/Output devices: Display size - 10.1-inch diagonal HP Illumi-Lite LED SD 1024 x 576. Graphics - Mobile Intel GMA 950. Integrated camera - Integrated VGA camera. Audio: High Definition Audio, stereo speakers, integrated stereo microphones, stereo headphone/line out, stereo microphone in Ports: External - 2 USB 2.0, 1 microphone in, 1 headphone/line-out, 1 external VGA monitor, 1 RJ-45, 1 AC power Slots: 1 Express Card/54, 1 secure digital
Product feature: 1GB 160GB 10.1IN XPH 6 CELL
Product brand: HP
Target attributes: Number of Cores
Answer: attribute: number of cores
value: None
source: None