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: Shiekh Womens Brenda-18 Boot - BLACK Size 5
Product description: Keep your wardrobe super chic with these must have boots! Brenda-18 features a faux suede upper, round toe design and a 3 chunky heel.
Product feature: synthetic, manmade sole, Vegan Friendly, ASIN: B008LWH7YG, Date first listed on Amazon: July 16, 2012, Average Customer Review: 4.0 out of 5 stars 1 customer review
Product brand: Shiekh
Target attributes: Type
Answer: attribute: type
value: boot
source: product title
attribute: type
value: boots
source: product description