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: Envy dv7-7259nr 17.3" LED Intel Core i7 i7-3630QM 2.40 GHz 8GB RAM 750GB HDD Win8 Midnight Black Notebook - Refurbished
Product description: Specifications: INTEL:I7-3630QM CI7-2.40G Processor 8GB/2-DIMM RAM 750GB/5400RPM Hard Drive DVDRW WEBCAM NVIDIA-GEFORCE GT 630M with a dedicated 2GB Windows 8 Home Premium 64-Bit Midnight Black 90 Days Warranty by HP
Product feature: Certified Refurbished by HP, INTEL I7-3630QM/CI7-2.40G Processor, 8GB/2-DIMM RAM, 750GB/5400RPM Hard Drive, 2GB Dedicated Nvidia GPU (NVIDIA-GEFORCE GT 630M)
Product brand: Hewlett Packard
Target attributes: Processor Brand
Answer: attribute: processor brand
value: intel core
source: product title
attribute: processor brand
value: intel
source: product description
attribute: processor brand
value: intel i7
source: product feature