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: Steel Pan Head Machine Screw, Black Oxide Finish, Meets DIN 7985, #1 Phillips Drive, M3-0.5 Thread Size, 25 mm Length, Fully Threaded, Import (Pack of 100)
Product description: Machine screws are threaded fasteners that are typically used with nuts or drilled and tapped (threaded) holes. They are available with a variety of head shapes, which determine how the screw interacts with the mating surface, and drive styles, which determine the type of driver required to install and remove the screw.
Product price: $9.04
Product brand: Small Parts
Target attributes: Type
Answer: attribute: type
value: machine screw
source: product title
attribute: type
value: machine screws
source: product description