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: Trill ASAP A$AP Rocky Leopard Print T-shirt
Product description: Trill Leopard Print A$AP (ASAP) t-shirt. A cool, high quality shirt with a loose fit for both Men and Women. Made of 100% Cotton and Printed in the USA, this shirt is ideal for any A$AP Fan.
Product feature: Cotton, 100% Cotton, Durable Digital Print, Loose fit, Suitable for Men, Women, and Children, Printed in USA, Shipping Weight: 8 ounces, ASIN: B00D9W6SAC, Item model number: 699, Date first listed on Amazon: September 28, 2013, Average Customer Review: 3.0 out of 5 stars 2 customer reviews
Product brand: ABT
Target attributes: Pattern
Answer: attribute: pattern
value: leopard print
source: product title
attribute: pattern
value: leopard print
source: product description