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: Acer 15.6" Aspire Win 8 Touch Laptop i5-3337U 1.8GHz 4GB 500GB | V5-571P-6485
Product description: With its big, bright multi-touch display and a host of powerful features, the affordably priced Acer Aspire V5 notebook will re-invigorate your everyday routine. Its roomy 15.6-inch screen makes the perfect canvas for the touch-optimized features of Windows 8, while a third-generation Intel Core i5 processor, 4 GB of RAM, and a 500 GB hard drive give you loads of performance and speed for a wide range of tasks.
Product feature: Screen Size: 15.6", Screen Resolution: 1366 x 768, Processor Type: Intel, Processor Model: i5-3337U, Processor Speed: 1.8GHz
Product brand: Acer
Target attributes: Battery Life
Answer: attribute: battery life
value: None
source: None