What annual event, to have been held in 2008, was cancelled after al-Qaeda's murder of four French tourists on Christmas Eve in December 2007 in Mauritania?
What annual event, held on a Monday for children and their parents, that was started in 1814 by First Lady Dolley Madison in the grounds of the Capitol, Washington DC, USA, is now held on the White House lawn?
What annual three day event held near Stamford, Lincolnshire, England, was first organised by the 6th Marquess of Exeter in 1961?
What was designed for an event in Beijing in 2008, to remain lit in 65 km/h (40 mph) winds and in rain of up to 50 mm (2 in) per hour?
