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: Harbor House Crystal Beach Twin Size Bed Comforter Set - Pale Blue, Quilted Coastal Seashells – 3 Pieces Bedding Sets – 100% Cotton Bedroom Comforters
Product description: The Harbor House Crystal Beach collection features an all over quilted comforter with sea shell motifs. This makes it easy to match back to any room.
Product feature: 100% Cotton, Imported, Twin set includes one comforter, one bedskirt, and one standard-size sham, The comforter is constructed with 100-percent cotton fabric in a crisp white color, and the quilting in blue truly brings out the novel shell motifs., Measurements: 72 by 90-inch comforter; 39 by 75-inch bedskirt with 15-inch drop; 20 by 26-inch sham, Dry Clean Only
Product price: $113.80
Product brand: Harbor House
Target attributes: Type
Answer: attribute: type
value: comforter set
source: product title
attribute: type
value: comforter
source: product description
attribute: type
value: comforters
source: product title
attribute: type
value: comforter
source: product feature