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: NIKE Youth MVP Keystone Low LE Molded Baseball Cleat Black/White
Product description: MVP Keystone Low (BG) is ideal if you're a young baseball player who's looking for a supportive, versatile, low-cut cleat for all conditions.
Product feature: synthetic-and-leather, Synthetic-leather upper for a great fit and feel, Phylon midsole for lightweight cushioning and comfort, Environmentally preferred rubber outsole provides great traction and durability, Package Dimensions: 11.7 x 7.5 x 4.1 inches, Shipping Weight: 1.4 pounds, ASIN: B007N9UEUC, Item model number: 535597-010, Date first listed on Amazon: February 26, 2013, Average Customer Review: 4.0 out of 5 stars 10 customer reviews
Target attributes: Athletic Shoe Style
Answer: attribute: athletic shoe style
value: baseball
source: product description
attribute: athletic shoe style
value: baseball
source: product title