Samba Schools are large, social entities with thousands of members and a theme for their song and parade each year. In Rio Carnival, samba schoolsparade in the Sambadrome ("sambódromo" in Portuguese). Some of the most famous include GRES Estação Primeira de Mangueira, GRES Portela, GRES Imperatriz Leopoldinense, GRES Beija-Flor de Nilópolis, GRES Mocidade Independente de Padre Miguel, and recently, Unidos da Tijuca and GRES União da Ilha do Governador. Local tourists pay $500–950, depending on the costume, to buy a Samba costume and dance in the parade. Blocos are small informal groups with a definite theme in their samba, usually satirizing the political situation. About 30 schools in Rio gather hundreds of thousands of participants. More than 440 blocos operate in Rio. Bandas are samba musical bands, also called "street carnival bands", usually formed within a single neighborhood or musical back-ground. The Carnival industry chain amassed in 2012 almost US$1 billion in revenues.
How much money in US dollars did the Carnival industry make in 2012?
1 billion

In May 2008, the National Archives announced a five-year agreement to digitize selected records including the complete U.S. Federal Census Collection, 1790–1930, passenger lists from 1820–1960 and WWI and WWII draft registration cards. The partnership agreement allows for exclusive use of the digitized records by Ancestry.com for a 5-year embargo period at which point the digital records will be turned over to the National Archives.
Which genealogy website benefits by the May 2008 announcement?
Ancestry.com

On 2 March 2009, however, Vieira was assassinated by what preliminary reports indicated to be a group of soldiers avenging the death of the head of joint chiefs of staff, General Batista Tagme Na Wai. Tagme died in an explosion on Sunday, 1 March 2009, target of an assassination. Military leaders in the country pledged to respect the constitutional order of succession. National Assembly Speaker Raimundo Pereira was appointed as an interim president until a nationwide election on 28 June 2009. It was won by Malam Bacai Sanhá.
Who was appointed interim president?
Raimundo Pereira