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: LifeStride Women's Mclellan Slip-on Shoe
Product description: When taking a walk to clear one's mind, one should always be sure to wear comfy shoes. Durable synthetic upper in shiny patent and velvety soft textures. Easy slip-on style with adjustable hook-and-loop strap at vamp. Closed toe with patent bumper. Vamp features small cutout details. Smooth synthetic lining and insole. Textured synthetic outsole. Imported. Measurements: Heel Height: 1 in Weight: 7 oz Product measurements were taken using size 6.5, width W (C). Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.
Product feature: Manmade, Rubber sole, When taking a walk to clear one's mind, one should always be sure to wear comfy shoes., Package Dimensions: 4 x 3 x 2 inches, Shipping Weight: 8 pounds ( View shipping rates and policies ), ASIN: B00FRSQ5TK, Date first listed on Amazon: October 10, 2013, Average Customer Review: 4.2 out of 5 stars 28 customer reviews
Product price: $19.99
Product brand: LifeStride
Target attributes: Type
Answer: attribute: type
value: shoes
source: product description
attribute: type
value: shoe
source: product title
attribute: type
value: shoes
source: product feature