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: New 20pcs 25mm Clear Transparent Flower Plastic Buttons Sewing Craft (Multi-color)
Product feature: 1)Material:Plastic, 2)Size:25mm (1") Approx., 3)Quantity:20pcs/package, 4)Brand:Chenkou Craft, 5)There are lots of buttons in my store
Product price: $4.99
Product brand: Chenkou Craft
Target attributes: Type
Answer: attribute: type
value: buttons
source: product title
attribute: type
value: buttons
source: product feature