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: Soft Comical Boxers for Men by LazyOne | Animal Pun Joke Underwear for Guys
Product description: Behind every good man is a mans good behind, so cover that keister with cheeky comedy! Made from soft 100% cotton, or boxers have a roomy fit with a button fly and an exposed elastic band. Its easy to see why the butt stops here! (For both Men and Womens hips!) Adult Sizes: S-XL ( Some sizes available in XXL )
Product feature: PLUSH BACKED ELASTIC: We select the perfectly balanced elastic with just the right combination of firm support and a luxurious feel against your skin., 100% PRE SHRUNKCOTTON: Our pajamasare made of soft pre-shrunk cotton so you wont need to worry about them shrinking. Our premium cotton will make you feel pampered!, MACHINE WASHABLE: Our products are developed for convenience and ease of use. You can machine wash warm and set them out to dry!, AZO FREE DYES: We work hard to manufacture all of our clothing with AZO free dyes. Creating a nice non toxic and clean natural product for you and your whole family!, SUPERIOR QUALITY AT AN EXCELLENT PRICE! LazyOneworksdiligently to find the best quality cotton, and designs so that you can trust that you are getting a great value!, Shipping Information: View shipping rates and policies, ASIN: B07GRKGKSV, Date first listed on Amazon: July 18, 2018, Average Customer Review: 5.0 out of 5 stars 12 customer reviews
Product price: $14.99 - $15.99
Target attributes: Silhouette
Answer: attribute: silhouette
value: boxers
source: product description
attribute: silhouette
value: boxers
source: product title