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: Home Source 500-22088-D Decorative Vase, 24 by 7.5 by 7.5-Inch
Product description: Home Source has established it's self as one of the top leaders in pioneering and marketing the most exciting, innovative and value based home furnishing products.They started in the New York metropolitan area and shortly thereafter, expanded on this success into the national and international arenas. Their unique, modern and fun wall art is becoming one of the fastest growing categories in home decor today. Both decorative and effortlessly functional, this metal vase is perfect for displaying an array of floral arrangements or can add an inspiring touch to your space on its own. Featuring textures and grooves you can feel and see, this vase is decorated with an all-around pattern. The glimmering metallic finishing will add a beautiful touch to your living room, dining space, or bedroom.
Product feature: Trumpet Vases, Provide rich earthy tones that adds warmth, Contemporary style with a yellow and brown finish, Material: Metal, Dimensions: 8 by 8 by 24 inches
Product brand: Home Source
Target attributes: Material
Answer: attribute: material
value: metal
source: product description
attribute: material
value: metal
source: product feature