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: Red Coral & CZ Ring
Product description: Feel in touch with nature with this red coral ring! Lustrous coral is embellished with an intricate design of CZs to create a tantalizing display. You just can't resist the bold color of this fantastic ring!(6)
Product feature: ASIN: B00641X34O, Item model number: JR3699-6, Date first listed on Amazon: November 6, 2011, Average Customer Review: 3.0 out of 5 stars 2 customer reviews
Product brand: Forever Fashion Jewelry
Target attributes: Silhouette
Answer: attribute: silhouette
value: None
source: None