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 Crystals Set Flower Hinged Barbell Dangle Belly
Product description: Catch this beautiful accessories for you
Product feature: New flower dangle belly ring, This is a eye-catching special designed multi crystals flower belly navel bar ring., I love it, becouse it let you look more charming ., Wonderful gift for you and your friends, New Fashion Design, Very Popular, You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition., Read the full returns policy, Go to Your Orders to start the return, Print the return shipping label, Ship it!, Product Dimensions: 3.3 x 2.6 x 2.1 inches, Shipping Weight: 0.16 ounces ( View shipping rates and policies ), ASIN: B005RRPW04, Date first listed on Amazon: April 2, 2015, Average Customer Review: 3.1 out of 5 stars 20 customer reviews
Product price: $7.99
Product brand: DUOKA
Target attributes: Design
Answer: attribute: design
value: belly ring
source: product feature
attribute: design
value: barbell
source: product title