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: Nokia Asha 303 Graphite, WiFi,FM RADIO, QWERTY Keyboard Unlocked QuadBand 3G Cell Phone International Version
Product description: Nokia Asha 303 features a full QWERTY keyboard and touch screen, a 1 GHz processor, and fast 3.5G and Wi Fi connectivity for quick online access.
Product feature: Cellular Band - Quad-Band 850 / 900 / 1800 / 1900 Mhz, Unlocked cell phones are compatible with GSM carriers such as AT&T and T-Mobile, but are not compatible with CDMA carriers such as Verizon and Sprint.
Product brand: Nokia
Target attributes: Rear Camera Resolution
Answer: attribute: rear camera resolution
value: None
source: None