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: 2016 Lenovo Ideapad 300 series 80Q7006AUS 6th generation i3-6100U 4 GBram/500GHDD
Product description: A laptop built for streaming online media. The Lenovo Ideapad 300 has everything you need to surf the web at lightning speeds. You can listen to music, watch movies and play games up to three times faster than regular laptops. The Lenovo Ideapad 300 has blazing internet speeds, and gives you the capability to browse website, stream movies and listen to music with 802.11 a/c WiFi, which offers up to three times the speeds of traditional 802.11 b/g/n. Equipped with Dolby audio, the stereo speakers sound bigger, better and louder than ever. Dolby technologies let you transform your Ideapad 300 into a personal home theater. You can edit photos, rendor home movies or even play games with the integrated HD graphics. 6th Generation Intel Core i3-6100U Processor 15.6" HD (1366 x 768) Display 15.11" x 10.43" x 0.90"-0.92" dimensions 5.6 pounds Integrated Intel HD Graphics 4 GB RAM 500 GB Hard Drive .3MP with single Microphone Webcam Stereo Speakers with Dolby Advanced Audio certification Up to 4 hours Local Video Playback Preloaded software includes: McAfee LifeSafe Trial, Office 2013 Trial, Lenovo REACHit 2.0, Lenovo SHAREit 2.0, Lenovo Solution Center, Lenovo Photo Master 2.0, OneKey Recovery, PowerDVD, Power2Go DVD Bluetooth 4.0 WiFi 802.11 a/c 1 X USB 3.0 2 X USB 2.0 HDMI-out, VGA, 4-in-1 Card Reader(SD, SDHC, SDXC, MMC), Audio Combo Jack
Product feature: 6th Generation Intel Core i3-6100U Processor, 15.6 inch Display, 4 GB RAM 500 GB HDD Windows 10, WiFi 802.11 a/c, 1xUSB3.0, 2xUSB 2.0, HDMI,, Bluetooth, Card Reader, DVD,, WebCam, Dolby audio
Product price: $190.00
Product brand: Lenovo
Target attributes: Number of Cores
Answer: attribute: number of cores
value: None
source: None