Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: RIM BlackBerry 8330 Curve Phone, Black (Sprint) CDMA ONLY - No Contract Required
Product description: The sleek and easy to hold design with a simple to use QWERTY keyboard is what makes the BlackBerry Curve 8330 popular. BlackBerry push technology is designed to deliver emails to your phone as they arrive so you read and respond to them. And its applications work together so you can email a web page to one of your contacts while you're browsing the web, or listen to music as you read and respond to your emails. In addition to the push technology reliability, the Curve also offers a 3.5mm Headset Jack, microSD Memory Card Slot, Bluetooth Connectivity, 2MP Camera, Music Player, support of full web pages, E-Mail and many more.These powerful features round out the total package that the sleek and elegantly-designed Curve offers.
Product feature: GPS Ready - Get turn-by-turn directions. Also with location-based applications., Bluetooth Connectivity - Take your talking to the next level with a Bluetooth wireless headset., 3 Megapixel camera with bright LED Flash., QWERTY Keyboard and Trackball Navigation., Clear ESN , Ready To Activate, No Contract Required
Product brand: BlackBerry
Target attributes: Lens Quantity
Answer: attribute: lens quantity
value: None
source: None