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

Input:
Product title: Assorted Designed Golf Balls (Soccer, Basketball, Football, Tennis, Baseball, 8-Ball) - 6 balls in a box
Product description: Great Gift and Fun Collectible. Perfect for any Sports fans. 6 new golf balls in a box. These balls can be played in a real game of golf.
Product feature: Great Gift and Fun Collectible., Perfect for any Sports fans., 6 new golf balls in a box., These balls can be played in a real game of golf.
Product brand: Pro Active Sports
Target attributes: Construction
Answer: attribute: construction
value: None
source: None