Instruction: Using the product's title, description, features, price, and brand, identify and retrieve the values associated with a specified set of target attributes. Output the extracted values along with their respective sources (e.g., title or feature) indicating where each value was found.

Input:
Product title: HP Elite Pro Slim Small Form Factor Desktop (Intel Quad Core i5 3.1GHz, 8GB DDR3 RAM, 1TB HDD, DVD RW, Windows Professional) (Certified Refurbished)
Product description: Key Features and Benefits:, Specifications: Processor: Intel Quad Core i5-2400 Processor 3.1GHz (Turbo up to 3.4GHz, 3MB L3 Cache) Graphics: Intel HD Graphics 2000 Memory: 8GB DDR3 Memory (support up to 16GB) Hard Drive: 1TB SATA 5400 RPM Hard drive Optical Drive: DVD Network: 10/100/1000 Gigabit Ethernet Wireless: USB Wifi Adapter Keyboard and Mouse: Standard USB Keyboard and Mouse, Front Panel: (4) USB 2.0 (1) Headphone (1) Microphone Rear Panel: (1) DisplayPort (1) VGA (6) USB 2.0 (1) RJ-45 LAN (1) Audio: Line-in/Microphone (1) Audio: Line-out (1) Serial Port Expansion Bays: (1) Low-Profile PCI Slot (1) Low-Profile PCI Express x16 Slot (2) Low-Profile PCI Express x1 Slots (1) External 5.25"" Drive Bay (1) Internal 3.5"" Drive Bay (1) External 3.5"" Drive Bay Operating System: Genuine Windows 7 Professional 64-bit, Amazon Renewed is your trusted destination for pre-owned and refurbished products that are inspected and tested to work and look like new. A Renewed supplier who is Amazon-qualified and performance managed, performs a full diagnostic test, replaces any defective parts, and thoroughly cleans the product. The products will have minimal to no signs of wear, no visible cosmetic imperfections when held 12 inches away, and may arrive in a brown or white box with relevant accessories that may be generic., This product comes with a minimum 90-day supplier-backed warranty An Amazon qualified supplier will provide a replacement or refund within 90 days of your receipt if the product does not work as expected. The warranty is in addition to Amazon's standard return policy. Learn more, Shop for smartphones, computers, laptops, tablets, home and kitchen appliances, game consoles, office products, and more on Amazon Renewed .
Product feature: Windows Professional 64-bit English (activation code sticker included on desktop case). Microsoft is discontinuing Windows 7. This product comes with Windows 7 or Windows 10, Windows Professional 64-bit English (activation code sticker included on desktop case). Microsoft is discontinuing Windows 7. This product comes with Windows 7 or Windows 10, Slim Form Factor Desktop with 13.3" x 4" x 14.9" dimension. Powerful Intel Core i5-2400 3.1GHz, Huge 8GB RAM and 1TB HDD. Great system for your business and office use. Comes with Keyboard and Mouse., This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com, Intel Quad Core i5-2400 (6MB Cache, Quad-Core, Base Frequency 3.1 GHz, up to 3.4 GHz Turbo Speed),8 GB DDR3L Memory, Support up to 16 GB RAM, 1 TB 7200 RPM Hard Drive,
Product price: $20.81
Product brand: HP
Target attributes: Processor Brand
Answer: attribute: processor brand
value: intel quad core i5
source: product description
attribute: processor brand
value: intel quad core i5
source: product title
attribute: processor brand
value: intel core i5
source: product feature
attribute: processor brand
value: intel quad core i5
source: product feature
attribute: processor brand
value: core i5
source: product feature