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: Henry The Buttonsmith Butterflies Button Set
Product description: Butterflies four button set. Each button is 1.25" in diameter. Made in the USA, Buttonsmith Inc. is a small American manufacturer based in Carnation, Washington, where the cows are contented. Originally founded as a school project by then-10-year-old Henry, we are now a unionized workplace employing ten people where we make beautiful environmentally-friendly products designed to bring a little joy to our customers' lives every day. If you are ever in Carnation, stop in and say hi!
Product feature: Butterflies four button set, Each buttons is 1.25" in diameter, Made in the USA, Product Dimensions: 3 x 5 x 2.2 inches, Shipping Weight: 0.64 ounces, ASIN: B00JMKHRAA, Date first listed on Amazon: December 30, 2014, Average Customer Review: 2.0 out of 5 stars 1 customer review
Product brand: Buttonsmith
Target attributes: Type
Answer: attribute: type
value: button
source: product title
attribute: type
value: button
source: product feature
attribute: type
value: button
source: product description
attribute: type
value: buttons
source: product feature