Input: Article: Tourism accounts for much of Uruguay's economy. Tourism in Montevideo is centered in the Ciudad Vieja area, which includes the city's oldest buildings, several museums, art galleries, and nightclubs, with Sarandi Street and the Mercado del Puerto being the most frequented venues of the old city. On the edge of Ciudad Vieja, Plaza Independencia is surrounded by many sights, including the Solis Theatre and the Palacio Salvo; the plaza also constitutes one end of 18 de Julio Avenue, the city's most important tourist destination outside of Ciudad Vieja. Apart from being a shopping street, the avenue is noted for its Art Deco buildings, three important public squares, the Gaucho Museum, the Palacio Municipal and many other sights. The avenue leads to the Obelisk of Montevideo; beyond that is Parque Batlle, which along with the Parque Prado is another important tourist destination. Along the coast, the Fortaleza del Cerro, the Rambla (the coastal avenue), 13 kilometres (8.1 mi) of sandy beaches, and Punta Gorda attract many tourists, as do the Barrio Sur and Palermo barrios.

Now answer this question: Plaza Independencia constitutes one end of what?

Output: 18 de Julio Avenue

Input: Article: By 1900, 7,531 people lived in the city. The population increased gradually to 13,913 in 1910. At about this time, the U.S. Veterans Administration had begun construction on the present Veterans Hospital. Many veterans who had been gassed in World War I and were in need of respiratory therapy began coming to Tucson after the war, due to the clean dry air. Over the following years the city continued to grow, with the population increasing to 20,292 in 1920 and 36,818 in 1940. In 2006 the population of Pima County, in which Tucson is located, passed one million while the City of Tucson's population was 535,000.

Now answer this question: What was the population of Tuscon in 2006?

Output: 535,000

Input: Article: After Cao's defeat at the naval Battle of Red Cliffs in 208 AD, China was divided into three spheres of influence, with Cao Cao dominating the north, Sun Quan (182252 AD) dominating the south, and Liu Bei (161223 AD) dominating the west. Cao Cao died in March 220 AD. By December his son Cao Pi (187226 AD) had Emperor Xian relinquish the throne to him and is known posthumously as Emperor Wen of Wei. This formally ended the Han dynasty and initiated an age of conflict between three states: Cao Wei, Eastern Wu, and Shu Han.

Now answer this question: Who was defeated at the Battle of Red Cliffs in 208 AD?

Output:
Cao