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: 3dRose Letter K Personal Monogram, Black and White Typography Elegant, Magic Transforming Mug, 11-Oz
Product description: Initial letter K personal monogrammed fancy black and white typography elegant stylish personalized Mug is available in both 11 oz. and 15 oz. Why drink out of an ordinary mug when a custom printed mug is so much cooler? This ceramic mug is lead free, microwave safe and FDA approved. Image is printed on both sides. Hand washing is recommended.
Product feature: Fill with hot liquid to transform from black to white, magically revealing image, White ceramic mug with black outer surface; image printed on both sides, Available in 11oz only; A fun and unique way to enjoy your favorite hot beverage, A perfect gift for any occasion; Fascinate them every time by revealing a secret or surprise image, Microwave-safe, hand-wash to preserve image
Product price: $8.11
Product brand: 3dRose
Target attributes: Material
Answer: attribute: material
value: ceramic
source: product feature
attribute: material
value: ceramic
source: product description