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

Input:
Product title: Jack Richeson Unison Grey Value Pastel Sticks, Set of 18, Shades 1 to 18
Product description: Hand Made Soft Pastels That Are Second To None. In Their Subtlety And Intensity of Colour, Their Fluency and Responsiveness To Touch And In Their Delicacy And Robustness, Unison Colour Soft Pastels Aspire To Perfection. Unison Began In The Early 1980s, When Artist John Hersey Found That Mass Produced, Factory Made Pastels Simply Did Not Offer The Qualities He Was Looking For. He Began An Inquiry, To See Whether, With The Pigments Available, He Could Construct Some Kind Of Mirror To The Magic Of Colour. Unison Colour Soft Pastels Are The Result.
Product feature: Unparalleled lightfastness, Purity of color, Incredible water solubility, Large One Half Inch By Two Inch Sticks, Hand rolled in the english countryside
Product brand: Jack Richeson
Target attributes: Type
Answer: attribute: type
value: soft pastels
source: product description