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: Lamy AL-Star Rollerball Point Pen Black
Product description: Sleek, stylish and fashionable this new Lamy AL-Star Rollerball pen is a must have product for people who are trying to keep up with the latest trends. The Lamy Al-Star pens take their inspiration from Lamy’s Safari line. The Al-Star pens are made of a lightweight, durable aluminum and engineered to demanding specifications. The pen also features an ergonomic grip section that slips perfectly between your fingers and offers a balanced writing experience. Overall, this unique German migrant is a perfect amalgamation of style and functionality.
Product feature: LAMY AL-STAR, ROLLER BALL PEN BLACK, SINGLE PEN ONLY., International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions., Manufacturer warranty may not apply, Learn more about Amazon Global Store.
Product price: $18.89
Product brand: Lamy
Target attributes: Ink Color
Answer: attribute: ink color
value: black
source: product title
attribute: ink color
value: black
source: product feature