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: Poster Discount Lewis - Steak n Shake Metal Tin Sign 16" W x 12.5" H, 16x12
Product description: The tin sign is just one the hundreds of high-quality wall dcor products offered to help you decorate in your own unique style. Items like Lewis - Steak n Shake Metal Tin Sign 16"W x 12.5"H enhance any interior and match your budget and style!
Product feature: Tin Sign Title: Lewis - Steak n Shake Metal Tin Sign 16"W x 12.5"H, Size: 16 x 12 inches
Product price: $12.99
Product brand: Poster Discount
Target attributes: Special Occasion
Answer: attribute: special occasion
value: None
source: None