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: Black Cotton Short Sleeves Ballet Dance Leotard
Product description: Dance leotards with large stretch Mesh short sleeves Asian sizes, they run smaller than US sizes. Please carefully check below detailed measurements before ordering: S-length:19.4 inches,bust:27.9 inches,waist:20.8 inches; M-length:20.6 inches,bust:29.5 inches,waist:22.4 inches; L-length:21.8 inches,bust:31 inches,waist:24 inches; XL-length:23 inches,bust:32.6 inches, waist:25.5 inches
Product feature: 95%cotton/5%spadex, Imported, Black Dance Leotards With Mesh Short Sleeves, S-length:19.4 inches,bust:27.9 inches,waist:20.8 inches; M-length:20.6 inches,bust:29.5 inches,waist:22.4 inches, L-length:21.8 inches,bust:31 inches,waist:24 inches, XL-length:23 inches,bust:32.6 inches, waist:25.5 inches, Main Material: cotton/spandex with very large stretch, Cotton lining at front part, U back, Package Dimensions: 9.4 x 7 x 0.5 inches, Shipping Weight: 4.8 ounces, ASIN: B01DK14QOQ, Item model number: 0840, Date first listed on Amazon: March 29, 2016, Average Customer Review: 3.4 out of 5 stars 5 customer reviews
Product brand: JS CHOW
Target attributes: Type
Answer: attribute: type
value: leotards
source: product feature
attribute: type
value: leotard
source: product title
attribute: type
value: leotards
source: product description