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: SanDisk 8GB MicroSDHC / Transflash with SD Adapter (BULK Packaging)
Product description: Not all devices support microSDHC 8 GB cards. Some devices support microSD but only up to 2 GB. PLEASE CHECK BEFORE BUYING Please contact your device manufacturer for details. To ensure compatibility, look for the microSDHC logo on the product or packaging of your new phone or PDA. We CANNOT replace cards once they have been inserted into a device. Please make sure that your devices support SDHC cards before purchasing this memory card! Many buyers do NOT READ THIS DESCRIPTION, and then their device is NOT Compatible
Product feature: SanDisk's newest format and capacity to the SD card family: microSD High Capacity (microSDHC) 8GB, Includes SD adapter., High storage capacity (8GB) for storing essential digital content such as high quality photos, video, Optimal speed and performance for microSDHC compatible devices ., PLEASE NOTE AND READ DESCRIPTION - BULK CARD BULK CARD - NOT RETAIL PACKAGING
Product price: $6.99
Product brand: SanDisk
Target attributes: SD Format
Answer: attribute: sd format
value: microsdhc
source: product feature
attribute: sd format
value: microsdhc
source: product title
attribute: sd format
value: microsdhc
source: product description