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 NT.L1VAA.001;B1-710-L480 7-Inch 16GB Tablet
Product description: Specifications
Product feature: Android 4.0 Ice Cream Sandwich, 7 inches Display, A4 1.2 GHz, 16 GB Flash Memory, 1 GB RAM Memory, 0.75 pounds
Product brand: Acer
Target attributes: Battery Life
Answer: attribute: battery life
value: None
source: None