Instruction: First, identify the target attributes from the provided list. Then, scan the product title, description, feature, and brand to extract the values associated with each target attribute. Finally, create a list of dictionaries, each containing the extracted attribute, its corresponding value, and the source where it was found.

Input:
Product title: Asus 2018 14" HD Thin & Light Laptop Computer, Intel Celeron N3060 up to 2.48GHz, 4GB RAM, 64GB eMMC, 802.11ac WiFi, Bluetooth 4.1, HDMI, USB 3.0, Windows 10 Home
Product description: Specifications Processor and Memory Processor Type: Intel Dual-Core Celeron N3060 Processor Processor Speed: 2.48 GHz Cache: 2M Cache Memory (RAM): 4 GB Maximum Memory Expansion: 4 GB Hard Drive and Multimedia Drives Hard Drive: 64 GB SSD Optical Drive: Not Available Multimedia Card Slot: MicroSD Graphics and Audio Graphics: Intel HD Graphics 400 Audio: Built-in speaker Built-in microphone Sonic Master Display, Keyboard, Mouse, and Webcam Display Size: 14.0" Display Type: Not specified Display Resolution: 1366x768 Keyboard: Chiclet Keyboard Mouse: Touchpad Webcam: VGA Web Camera (Fixed type) Connectivity Ethernet: Not Available Wi-Fi: 802.11ac (Dual band) 1*1 Bluetooth: Bluetooth 4.1 Modem: Not specified Ports/Slots Ports: 2x USB 3.0 1x Headphone-out & Audio-in Combo Jack 1x HDMI Expansion: Not specified Power Battery Type: Lithium ion Typical Battery Life: Up to 12hrs Software Operating System: Windows 10 (64bit) Assembled Size Dimensions: 12.8" x8.9" x 0.7" Weight: 2.9 lbs.
Product feature: 14" 1366 x 768 Display; Intel HD Graphics 400, Intel Dual-Core Celeron N3060 Processor @1.6GHz (2M Cache, up to 2.48 GHz), 4GB RAM, 64GB SSD Storage; No Optical Drive, 802.11ac (Dual band) 1*1, Bluetooth 4.1, 2x USB 3.0 1x Headphone-out & Audio-in Combo Jack 1x HDMI,, Windows 10 home 64-bit, Weighs 2.9 lbs. and measures 0.7" thin
Product price: $59.01
Product brand: Asus
Target attributes: Processor Speed
Answer: attribute: processor speed
value: 2.48 ghz
source: product description
attribute: processor speed
value: 2.48ghz
source: product title