Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: Pro Jewelry .925 Sterling Silver "Red and Blue" Crystal Pave Charm Bead for Snake Chain Charm Bracelets
Product feature: Quantity: 1 Bead, Material: S925 Solid Silver Single slide on Core (not threaded) with Crystal, Fits: All major Brand Bracelets, such as Pandora, Troll, Chamilia, Carlo Biagi, Zable, and other add-a-bead bracelets., ASIN: B009W74YV8, Item model number: S, Date first listed on Amazon: May 21, 2014, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product brand: Pro Jewelry
Target attributes: Shape
Answer: attribute: shape
value: None
source: None