Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: Lenovo Thinkpad X1 Yoga 2-in-1 Convertible Business Laptop 1st Gen (20FQ-002YUS) Intel i7-6600U, 16GB RAM, 512GB SSD, 14-inch WQHD Multi-Touch IPS, Backlit KB, Win10 Pro
Product description: Ultralight 14" Business 2-in-1: The definition of versatility, this ultralight 2-in-1 adapts to your business with 4 flexible modes to work, present, create, and connect. Features a stunning display with intense color and deep contrast. Even a dockable, rechargeable stylus pen. Plus, the fastest, advanced mobile broadband technology available. Works the Way You Do: Thin and light 14" 2-in-1 convertible, the ThinkPad X1 Yoga supports four flexible usage modes for when you want to work, present, create, and connect. Durable, Yet Ultrathin & Ultralight: The full-sized, backlit keyboard is spill-resistant and the keys retract automatically when not being used as a laptop, so they are not exposed when the keyboard is face-down on a desk or table. Plus, the X1 Yoga is tested against military specifications and made to endure extremes. Yet for all its durability, it weighs just 2.8 lbs / 1.27 kg, making it the world's thinnest and lightest 14" 2-in-1 business laptop. Like the rest of the X1 family, this convertible Ultrabook is thin, light, and tough.
Product feature: Processor: Intel Core i7-6600U (2C, 2.6 / 3.4GHz, 4MB)., Memory: 16GB RAM., Storage: 512GB Solid State Drive M.2., Display: 14" WQHD (2560x1440) IPS Anti-glare Screen., Operating System: Windows 10 Pro.
Product brand: Lenovo
Target attributes: Weight
Answer: attribute: weight
value: None
source: None