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: 2PX5897 - HP ProLiant ML310e G8 686232-S01 4U Micro Tower Server - 1 x Intel Xeon E3-1220V2 3.1GHz
Product description: The HP ProLiant ML310e Gen8 Server series has ideal entry level servers for growing businesses and enterprise remote branch offices. The ML310e Gen8 provides an affordable and steadfast solution for small and medium sized businesses that are budget conscious and have limited or no in-house IT resources. It also incorporates the latest HP innovations that make it simpler for enterprises to manage servers in remote offices.
Product feature: Cache - 8 MB, Processor_Core - Quad-core 4 Core, Green_Compliant - Yes, Green_Compliance_Certificate/authority - WEEE, Memory_Card_Reader - Yes
Product brand: HP
Target attributes: Processor Brand
Answer: attribute: processor brand
value: xeon
source: product title