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: Pink Silver Bling Rhinestone Diamond Crystal Faceplate Hard Skin Case Cover for Apple iPod Nano 5
Product description: This Beautiful 2 piece High Quality Bling Case was made perfectly for your phone and will provide maximum protection against scratches and bumps. It gives your phone a shiny look and will turn heads everywhere you go. Made with high-quality hard plastic and covered with high quality rhinestones, this case is not only durable, but also allows for full functionality of your phone. Cutouts for headphones, charger, and other ports keep your phone fully functional while in the case. You will be so impressed on how nice the case will look on your phone.
Product feature: 100% Brand New, Fits Perfectly, 2 Piece Snap On Case, High Quality Rhinestones, Easily Snaps On/Off
Product brand: RM Trading
Target attributes: Style
Answer: attribute: style
value: skin case
source: product title
attribute: style
value: hard plastic
source: product description
attribute: style
value: snap on
source: product feature