Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: Soccer Referee Shorts
Product description: Pro Quality Soccer Referee Short.
Product feature: PRO QUALITY FABRIC: Blended Cotton and Polyester material., Two Side Pockets, Two Back Pockets with Velcro Flaps, SEE IMAGES FOR SIZE CHART, FAST SHIPPING! All orders are dispatched within 1 business day.
Product price: $9.99 - $14.99
Product brand: Total Soccer Factory
Target attributes: Official Type
Answer: attribute: official type
value: referee
source: product title
attribute: official type
value: referee
source: product description