Passage: After the 2003 Masters, Benson & Hedges had to end their sponsorship of the event due to UK restrictions on tobacco advertising, and the tournament was unsponsored in 2004. In 2005, Rileys Club became the sponsor of the event. There was also no qualifying competition, and both wild-card places were awarded by the governing body, but the competition returned the following season. SAGA Insurance took over sponsorship of the tournament in 2006 and later the same year agreed to a deal to sponsor the event until 2009. 2006 was also the last year the tournament was held at the Wembley Conference Centre, before it was demolished in the same summer to make place for redevelopment. Following the death of Paul Hunter in October 2006, Jimmy White led calls for the Masters trophy or tournament to be renamed in honour of Hunter, who had won the title three times in four years between 2001 and 2004. Lindsey Hunter, widow of Paul Hunter, later expressed her wishes for the trophy to be renamed, claiming that "...everybody expected it. Every player I've spoken to, every fan, thought it would be a definite". World Snooker, the sport's governing body, decided against renaming the trophy, stating "Our board unanimously agreed that the Paul Hunter Scholarship was the most fitting tribute. Just as Hunter himself rose swiftly through the amateur ranks, the scholarship will give a gifted young player the chance to fulfil his talent through elite training."In a slight change for 2007, one extra discretionary wild-card place was awarded, bringing the total number of players up to 19. The event was held at the Wembley Arena. For 2008 the tournament reverted to having only two wild-card players.

Question: Where was the World Snooker tournament held in 2007?
the Wembley Arena