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: ZTE Warp Android Smartphone (Boost Mobile)
Product description: ZTE Warp N860 - 4GB - Black (Boost Mobile) Smartphone *FAIR*
Product feature: Shipping Weight (OZ): 11, Model: Warp, Carrier: Boost Mobile
Product brand: ZTE
Target attributes: Operating System
Answer: attribute: operating system
value: android
source: product title