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: MSI Computer Corporation LGA 1155 Intel Z77 SATA 6 Gb/s USB 3.0 3 PCI-E x16 3.0 ATX Motherboard Z77A-GD80
Product description: MSI Z77A-GD80 LGA1155/Intel Z77/DDR3/SATA3&USB3.0/CrossFireX&SLI/A&GbE/ATX Motherboard
Product feature: CPU: LGA1155; Supports 3rd Generation Intel Core i7/i5/i3/Pentium/Celeron Processors, Chipset: Intel Z77, Memory: 4x DDR3-2800(OC)/2667/2600/2400/2200/2133/2000/1866/1600/1333/1066?DIMM Slots, Dual Channel, Max capacity up to 32 GB, Slots: 3x PCI-Express 3.0 x16 Slots, 4x PCI-Express 2.0 x1 Slots, SATA: 4x SATA3 Ports, Two Support AHCI/RAID 0, 1, 5, 10; 4x SATA2 Ports, Supports AHCI/RAID 0, 1, 5, 10, Ports: 10x USB 2.0 Ports (4 rear, 6?via header); 4x USB 3.0 Ports(2 rear,?2via header); 1x PS/2 Keyboard/Mouse Port; 1x VGA Port; 1x?Display Port; 1x?Coaxial S/PDIF-Out ?Port; 1x?Optical S/PDIF-Out Port; 1x HDMI Port; 1x RJ45 LAN Port; Audio I/O Jacks, LAN:?Integrated Intel 82579 PCI-Express 10/100/1000 Gigabit Ethernet Controller
Product brand: MSI
Target attributes: Socket Type
Answer: attribute: socket type
value: lga 1155
source: product title
attribute: socket type
value: lga1155
source: product description
attribute: socket type
value: lga1155
source: product feature