Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: Worth YBC11-26/15 Youth Baseball Bat (26-Inch)
Product description: Worth Copperhead has an extended barrel and optimized wall thickness make this bat ideal for players looking for a balance of performance and durability.
Product feature: Whiplash- Up to 30% thingger taper for reduced weight and increased bat speed, X-tended sweetspot, Silencer grip, Center load, 26 inches long and weights 15 ounces with a one year warranty and is 1.15 BPF approved
Product brand: Worth
Target attributes: Material
Answer: attribute: material
value: None
source: None