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: HP C6569C Heavyweight Coated Paper 6.6 mil, 130 g/m2, 35 lb., 2" core, 1 roll/carton (42" x 100)
Product description: Produce rich, color-accurate, lasting prints and deliver on quick turnaround times. HP Heavyweight Coated Paper is ideal for color-accurate prints, working comps, and design proofs, and offers excellent handleability - roll or stack time-sensitive documents as soon as they come off the printer. And to help you meet the environmental objectives of your company - and your clients - this "FSC-certified," recyclablepapersupports responsible forest management worldwide.
Product feature: See high-quality, consistent image quality Print to Print, Enhanced coating provides ink abrasion resistance, Gain versatility with this Premium bright white paper
Product brand: Hewlett Packard
Target attributes: Type
Answer: attribute: type
value: roll
source: product title
attribute: type
value: roll
source: product description