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: Blackberry Curve 9350 Sprint CDMA OS 7.0 Cell Phone - Black
Product description: Product InformationThe stylish and sleek, BlackBerry Curve 9350 mobile will truly amaze you with its stunning looks and features. Installed with BlackBerry 7 OS, this BlackBerry smartphone brings access to number of fun applications. This 802.11 b/g/n enabled BlackBerry mobile lets you access high-speed internet connection. Composing emails and texts is now quick and simple with the backlit narrow QWERTY keyboard of this BlackBerry smartphone. Exchange data to-and-fro with this Bluetooth v2.1 enabled BlackBerry mobile . Capture improved quality pictures with the built-in 5 MP, flash camera of the BlackBerry Curve 9350 mobile.Network Type: CDMA
Product feature: 2G: CDMA 800 / 1900 3G: CDMA2000 1xEV-DO, BlackBerry OS 7.0, Full QWERTY keyboard + Optical trackpad, 5MP Camera (2592 1944 pixels) with LED flash, Geo-tagging, face detection, image stabilization + Video, 160MB, 512MB ROM, 290MB RAM + microSD Slot expandable up to 32GB
Product price: $40.08
Product brand: BlackBerry
Target attributes: Battery Life
Answer: attribute: battery life
value: None
source: None