Question:  The 2011 WPA World Nine-ball Championship was organized by a sport event promotions company based in which city ?
Sentence (from "Matchroom Sport"): It first came to attention in the sports of snooker and boxing and is also involved in pool, bowling, golf (see PGA EuroPro Tour), fishing, darts, ping pong, and poker and as of late 2016 gymnastics.
Relevant evidence: No