 
 <prompt> Wetin dey determine who go win di game? Based on di previous question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: "On September 30, 1987, Foster file application with United States Patent and Trademark Office to patent im invented sport. The patent application cover the rules of the game, specifically detailing the goalposts and rebound netting and how dem dey affect gameplay. Foster application na granted on March 27, 1990. The patent expire on September 30, 2007." 