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: 2 Fisher Space Pens Gold Clips for 400 Series Bullet Pen
Product description: Standard Chrome Clip for Fisher Bullet pens.
Product feature: 2 Fisher Space Pens Gold Clips for 400 Series Bullet Pen
Product price: $7.84
Product brand: Fisher
Target attributes: Ink Color
Answer: attribute: ink color
value: None
source: None