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: LG Risio 4.5" 4G LTE LG H343 Cricket Wireless Android 5.1 Lollipop
Product description: LG Risio 4.5 4G LTE LG H343 Cricket Wireless Android 5.1 Lollipop
Product feature: Qualcomm Snapdragon 410 processor Quad-Core 1.2GHz processor; 1GB RAM, Android 5.1 Lollipop OS; 4G LTE speed, 4.5" FWVGA touch screen, 5.0MP rear-facing camera; Built-in LED flash; VGA front-facing camera, 8GB internal memory; Expandable storage up to 32GB (microSD card sold separately)
Product price: $10.12
Product brand: Risio
Target attributes: Lens Quantity
Answer: attribute: lens quantity
value: None
source: None