Instruction: Using the product's title, description, features, price, and brand, identify and retrieve the values associated with a specified set of target attributes. Output the extracted values along with their respective sources (e.g., title or feature) indicating where each value was found.

Input:
Product title: MMF Industries Chain-Riter Stick-On Ballpoint Counter Pen, Black Ink, Fine Point, Each - 28804
Product description: Affixes to countertop with tough, double-coated adhesive for exceptional security of your pen. Hard rubber base will not crack or break, ensuring maximum durability. Swivel socket and pen holder provide extra versatility. Point Type: Fine; Ink Color(s): Black; Pen Type: Ballpoint; Pen Style: Counter.
Product feature: Sold Individually, Pen Style: Counter. Pen Type: Ballpoint.Refillable: Refillable. Barrel Color(s): Black., Ink Color(s): Black. Point Type: Fine.Visible Ink Supply: No.
Product price: $11.99
Product brand: MMF Industries
Target attributes: Type
Answer: attribute: type
value: ballpoint
source: product title
attribute: type
value: ballpoint
source: product feature