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 TravelMate B NX.V7QAA.015;TMB113-M-6889 11.6-Inch Laptop
Product description: Thin, light and featuring an 11.6" anti-glare display, the TravelMate B Series is easy to carry to school or work -- and easy on the eyes. Mighty Intel processing, high-definition graphics and dependable security applications make this notebook a solid tool for accomplishing education or business tasks in any setting.
Product feature: Intel Core i3-3217U 1.80 GHz, 4 GB DDR3, 500 GB 5400 rpm Hard Drive, 11.6-Inch Screen, Windows 8 Professional
Product brand: Acer
Target attributes: Battery Life
Answer: attribute: battery life
value: None
source: None