Question: What is the population of this port city in the province of Buenos Aires, Argentina, which is the birthplace of Francisco Garraffa?

Context paragraphs:
Buenos Aires: Buenos Aires ( or ; ] ) is the capital and most populous city of Argentina.  The city is located on the western shore of the estuary of the Río de la Plata, on the South American continent's southeastern coast.  "Buenos aires" can be translated as "fair winds" or "good airs", but the first one was the meaning intended by the founders in the 16th century, by the use of the original name "Real de Nuestra Señora Santa María del Buen Ayre".  The Greater Buenos Aires conurbation, which also includes several Buenos Aires Province districts, constitutes the fourth-most populous metropolitan area in the Americas, with a population of around 17 million.

Avellaneda: Avellaneda (] ) is a port city in the province of Buenos Aires, Argentina, and the seat of the Avellaneda Partido, whose population was 328,980 as per the 2001 census .  Avellaneda is located within the Greater Buenos Aires metropolitan area, and is connected to neighboring Buenos Aires by several bridges over the Riachuelo River.

National University of Central Buenos Aires: The National University of Central Buenos Aires ("Universidad Nacional del Centro de Buenos Aires") is a public institution of higher learning located in Tandil, a city in the central region of Buenos Aires Province, Argentina.  It was founded in 1974 as part of University of Buenos Aires Professor Alberto Taquini's plan to geographically diversify Argentina's National University system.

Greater Buenos Aires: Gran Buenos Aires (Spanish: "Gran Buenos Aires" , GBA) is the urban agglomeration comprising the autonomous city of Buenos Aires and the adjacent 24 "partidos" (districts) over the Province of Buenos Aires.  Thus, it does not constitute a single administrative unit.  The conurbation spreads south, west and north of Buenos Aires city.  To the east, the River Plate serves as a natural boundary.

Buenos Aires Province: Buenos Aires (] , "Provincia de Buenos Aires"; English: "good airs") is the largest and most populous Argentinian province.  It takes the name from the city of Buenos Aires, which used to be part of the province and the provincial capital until it was federalized in 1880.  Since then, in spite of bearing the same name, the province does not include the national capital city proper, though it does include all other localities of the Greater Buenos Aires metropolitan area surrounding it.  The current capital of the province is the city of La Plata, founded in 1882.

Francisco Garraffa: Francisco Garaffa or Garraffa (born May 17, 1910, date of death unknown) was an Argentinian international football player.  He was born in Avellaneda.

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.

Edward Banfield (railroad engineer): Edward Banfield (9 February 1837 – 6 July 1872) was an English railroad engineer who drove the first locomotive ("La Porteña") through Buenos Aires, Argentina, in 1857 as part of the Buenos Aires Western Railway.  He was the first General Manager of the British-owned Buenos Aires Great Southern Railway between 1865 and 1872, founded in Argentina by Edward Lund in 1862.  Banfield died in 1872, and the town of Banfield in Buenos Aires Province, founded in 1873, was named after him.  The professional Argentine football club Club Atlético Banfield also carries his name.

Villa Fiorito: Fiorito is a suburb in the Lomas de Zamora Partido of Buenos Aires Province, to the south of central Buenos Aires, Argentina.  It forms part of the Greater Buenos Aires urban conurbation.  Many Italian and Spanish descendants live there, but in recent decades people from other provinces have come to live near central Buenos Aires, creating new slums in the city.  Diego Maradona, considered one of the best footballers of all time, was raised in Villa Fiorito.

Quilmes: Quilmes (] ) is a city in the province of Buenos Aires, Argentina , on the coast of the Rio de la Plata on the south east of the Greater Buenos Aires.  It is the capital of the borough Quilmes ("Partido de Quilmes"), and has a population of 230,810.  It is located 17 km south of the capital of Buenos Aires, the Autonomous City of Buenos Aires.

Supporting paragraphs: Francisco Garraffa Avellaneda
Answer: 328,980