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: Posterservice Chronic Poster
Product description: This high quality poster image is approximately 36-Inch by 24-Inch and is suitable for framing. The poster offers a lower cost alternative to a more expensive print or painting. Posters are perfect wall dcor for any household or age range.
Product feature: Quality graphic image, an alternative to an expensive print or painting, Suitable for framing
Product price: $6.97
Product brand: Posterservice
Target attributes: Paint Medium
Answer: attribute: paint medium
value: None
source: None