Instruction: First, identify the target attributes from the provided list. Then, scan the product title, description, feature, and brand to extract the values associated with each target attribute. Finally, create a list of dictionaries, each containing the extracted attribute, its corresponding value, and the source where it was found.

Input:
Product title: BlackBerry Torch 9810 Unlocked GSM HSPA+ OS 7.0 Slider Cell Phone - White
Product description: A powerful 1.2 GHz processor provides smoother multitasking and navigation, fast downloads, and crisp HD 720p video recording via the Torch 9810's 5-megapixel camera. And the integrated Liquid Graphics technology combines a dedicated graphics processor with the main processor for a highly responsive touch interface with incredibly fast and smooth graphics. Packed full of the latest mobile technologies, the Torch 9810 includes an augmented reality feature that uses the built-in compass (magnetometer) to display over 150 million points of interest, BBM contacts, and more. And BlackBerry's universal search has been amped up in BlackBerry 7 OS. With speech-to-text translation, you can now look for files, e-mail, contacts and music--and even search the web--all without typing a thing. With BlackBerry, on-the-go productivity is the name of the game. You'll get access to the world-class BlackBerry push messaging service with access to up to 10 supported business and personal e-mail accounts, plus BlackBerry Enterprise Server support for corporate e-mail installations. The DataViz Docs To Go Premium suite is pre-loaded for editing Microsoft Word, Excel and PowerPoint files from anywhere, and you can access BlackBerry App World to download more productivity apps (as well as games and more).
Product feature: 4G Speed,Resolution5.0MP Auto-focus with flash, Internal memory storageUp to 8 GB
Product price: $26.46
Product brand: BlackBerry
Target attributes: Weight
Answer: attribute: weight
value: None
source: None