Question: What world record is held by the avenue that contains Argentina's Obelisco de Buenos Aires?

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Fray Mocho: Fray Mocho was the pen name for the Argentine writer and journalist José Ciriaco Alvarez (also known as José Sixto Alvarez).  He was born in Gualeguaychú in Entre Ríos Province, on August 26, 1858.  Moved to Buenos Aires first in 1876 and then again to stay in 1879 at the age of 21.  He was known to his friends as “Mocho” (blunt) and later added the title “Fray” (brother, as in a Friar in the Catholic Church).  He wrote for several newspapers including "El Nacional", "La Pampa", "La Patria Argentina", and "La Razón".  He also wrote for magazines such as the short-lived "Fray Gerundio", "El Ateneo" and "La Colmena Artística".  He wrote essays about life in Buenos Aires in the latter part of the 19th century, including "Esmeraldas" (polished), "Cuentos Mundanos" (Ordinary Stories), "La vida de los ladrones célebres de Buenos Aires y sus maneras de robar" (“The life of celebrated robbers of Buenos Aires and their manner of robbing") and "Memorias de un Vigilante" (Memoirs of a policeman).  In 1898 he wrote the book "En el Mar Austral" (“In the Southern Sea").

ATP Buenos Aires: The ATP Buenos Aires (Spanish "Abierto de Buenos Aires") is an annual tennis event for male tennis players held in Buenos Aires, Argentina.  The tournament is an ATP World Tour 250 series event on the 2014 ATP World Tour, and is played on outdoor clay courts at the 5,500 capacity Buenos Aires Lawn Tennis Club, in the Palermo "barrio" (neighbourhood).  Usually held in February, it includes both a men's singles and a men's doubles tournament.  Between 1970 and 1989 it was part of the Grand Prix tennis circuit and a Grand Prix Super Series event (1970–71).

9 de Julio Avenue: July 9 Avenue, located in the city of Buenos Aires, Argentina, is the widest avenue in the world.  Its name honors Argentina's Independence Day, July 9, 1816.

Buenos Aires Carnival: The Buenos Aires Carnival (Spanish: "Carnaval de Buenos Aires" or "Corso de Buenos Aires" ) is an annual event that takes place during the Carnival festivities, usually at the end of February, on the streets of Buenos Aires, Argentina.  The two-day event features murga parades, colourful customs, water bombs and many other amusement activities.

Magda Frank: Magda Frank Fischer (July 20, 1914 – June 23, 2010) was a Hungarian-Argentine sculptor.  She was born in Kolozsvár, Transylvania, which at that time belonged to Hungary but in 1918, was incorporated into Romania.  Because of Nazi persecution, she left Hungary to settle in Switzerland.  Years later, she moved to Paris to study at the Académie Julian.  In 1950, she arrived in Buenos Aires, Argentina to visit her brother, her only living family member.  Here, she was appointed professor at the Artes Visuales de Buenos Aires and exhibited at the Galería Pizarro.  She participated in the Premio Palanza Buenos Aires.  She received the Benito Quinquela Martín award at the Eduardo Sívori Museum, and was honored by the Argentine Senate.  Her works are part of the collections at the Musée National d'Art Moderne in Paris, the National Museum of Fine Arts in Paris, the National Museum of Fine Arts in Buenos Aires.  Frank resettled in Argentina in 1995 and built the Magda Frank House Museum in the Saavedra barrio at Vedia 3546.  She died in 2010 in Buenos Aires, Argentina.

Diagonal Norte (Buenos Aires Underground): Diagonal Norte is a station on Line C of the Buenos Aires Underground.  From here, passengers may transfer to Carlos Pellegrini Station on Line B or 9 de Julio Station on Line D and Metrobus 9 de Julio.  It is located near the Obelisco de Buenos Aires.

Buenos Aires Metropolitan Cathedral: The Buenos Aires Metropolitan Cathedral (Spanish: Catedral Metropolitana de Buenos Aires ) is the main Catholic church in Buenos Aires, Argentina.  It is located in the city center, overlooking Plaza de Mayo, on the corner of San Martín and Rivadavia streets, in the San Nicolás neighbourhood.  It is the mother church of the Archdiocese of Buenos Aires and the primatial church of Argentina.

Buenos Aires City Legislature: The Buenos Aires City Legislature (Spanish: "Legislatura de la Ciudad Autónoma de Buenos Aires" , commonly known as the "Legislatura Porteña") is a central part of the Government of the City of Buenos Aires, Argentina.  It is housed in the Palacio de la Legislatura de la Ciudad de Buenos Aires, an architectural landmark in the city's Montserrat section.

Obelisco de Buenos Aires: The Obelisco de Buenos Aires (Obelisk of Buenos Aires) is a national historic monument and icon of Buenos Aires.  Located in the Plaza de la República in the intersection of avenues Corrientes and 9 de Julio, it was erected in 1936 to commemorate the fourth centenary of the first foundation of the city.

University of Buenos Aires: The University of Buenos Aires (Spanish: "Universidad de Buenos Aires" , UBA) is the largest university in Argentina and the second largest university by enrollment in Latin America.  Founded on August 12, 1821 in the city of Buenos Aires, it consists of 13 departments, 6 hospitals, 10 museums and is linked to 4 high schools: Colegio Nacional de Buenos Aires, Escuela Superior de Comercio Carlos Pellegrini, Instituto Libre de Segunda Enseñanza and "Escuela de Educación Técnica Profesional en Producción Agropecuaria y Agroalimentaria".

Supporting paragraphs: Obelisco de Buenos Aires 9 de Julio Avenue
Answer: the widest avenue in the world