Question: What were the main groups involved in the event that resulted in the sacking of Constantinople in 1204? Passage 1:On 28 June 1926, the Ludington Daily News reported that Bahia would pay a visit to Philadelphia, accepting an invitation from the United States government to participate in the sesquicentennial celebrations. In mid-1930, Bahia and Rio Grande do Sul—under the command of Heráclito Belford Gomes—escorted Brazil's President-elect Júlio Prestes to the United States. Traveling on board the Brazilian-Lloyd ocean liner , Prestes was returning American then-President-elect Herbert Hoover's visit to Brazil in December 1928. The cruisers and met the three ships about off Sandy Hook and honored Prestes with a 21-gun salute. After spending five hours in the Ambrose Channel due to fog, Prestes traveled on a launch to a pier, during which Bahia rendered one 21-gun salute and Fort Jay offered two. After arriving ashore, he traveled to City Hall before speeding down to Washington, D.C. He stayed in the United States for eight days before departing for France on the White Star Line's . Bahia and Rio Grande do Sul were berthed at the Brooklyn Navy Yard for the visit.
 Passage 2:Thomson was born in Dundee, and attended Brechin High School. He made his debut for Scotland in June 1992, in a first-class game against Ireland. Later in 1992, and also in 1994, Thomson trialled with English counties, playing Second XI Championship games for Leicestershire and Durham, respectively. At the 1997 ICC Trophy in Malaysia, he played in five of Scotland's nine matches, taking six wickets. His best figures, 3/37 from eight overs, came against Papua New Guinea. Thomson was a regular for Scotland throughout the late 1990s and into the early 2000s, although he missed out on both the team's appearance at the 1999 World Cup and the 2001 ICC Trophy. His final matches for the national team came in the 2003 National Cricket League, against Derbyshire and Lancashire.
 Passage 3:Papal calls for renewed holy war at the end of the twelfth century inspired not only the disastrous Fourth Crusade that sacked Constantinople in 1204, but also a series of simultaneous "Northern Crusades" that are less fully covered in English-language popular history, but which were more successful in the long run. Before the crusades, the region of Livonia was a mixed outpost, a pagan society where merchants from the Hanseatic League encountered merchants of Novgorod, and where Germanic, Scandinavian, and Russian trade, culture, and cults all mingled. The specific ethnic groups that intermingled and traded with the Germans, Danish, Swedish, and Russians here included the Wends, who were merchants from Lübeck, the Estonians, the Karelians, the Kuronians, the Lettgallians, the Semgallians (sometimes known as the Letts), the Livonians and the Lithuanians. The Western merchants would trade silver, textiles, and other luxury goods for furs, beeswax, honey, leather, dried fish, and amber. Livonia had been an especially promising location in terms of resources, and Arnold of Lübeck, in his Chronicle of the Slavs wrote that the land was "abundant in many riches" and was "fertile in fields, plentiful in pastures, irrigated by rivers", and "also sufficiently rich in fish and forested with trees".

Output: 3