Instruction: Using the product's title, description, features, price, and brand, identify and retrieve the values associated with a specified set of target attributes. Output the extracted values along with their respective sources (e.g., title or feature) indicating where each value was found.

Input:
Product title: Dell Latitude 2110 Netbook 468-8932
Product description: 1366 x 768 WXGA Display - 2 GB RAM - 160 GB HDD - Intel GMA 3150 - Webcam - Windows 7 Professional
Product feature: Intel Atom N470 1.83GHz, Fresh Windows 10- 64 bit, 2GB DDR2 RAM, Microsoft office 2013., 80GB SSD
Product brand: Dell
Target attributes: Battery Life
Answer: attribute: battery life
value: None
source: None