Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: The Olivia Collection Fancy Alloy Wave Link Magnotherapy Bracelet
Product description: This wave link magnotherapy bracelet is fashionable as well as effective in the treatment of many ailments including: ~ Pain relief. ~ Control swelling. ~ More restful sleep. ~ Increase tissue oxygenation. ~ Relief of stress. ~ Increase cellular oxygen level. ~ Improve blood circulation. ~ Improve anti-infective activity. ~ Reduce water retention. Other styles available as part of The Olivia Collection. The strength of the magnets is 1500gauss per each piece of magnet.
Product feature: ASIN: B006H2ORHW, Item model number: Mag14, Date first listed on Amazon: January 1, 2007, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product brand: The Olivia Collection
Target attributes: Silhouette
Answer: attribute: silhouette
value: link
source: product title
attribute: silhouette
value: link
source: product description