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

Input:
Product title: ACME Studios Standard Rollerball Pen Biltmore, Orange/Green/Blue (PW13R)
Product description: Acme Studios Biltmore Standard Roller Ball Pen
Product feature: Brass barrel, Hand applied color image, Metal-to-metal threading, Comfortable weight and shape, Designed by Frank Lloyd Wright
Product brand: ACME Studios Inc
Target attributes: Type
Answer: attribute: type
value: rollerball
source: product title
attribute: type
value: roller ball
source: product description