The south of the city is home to some other high-income neighborhoods such as Colonia del Valle and Jardines del Pedregal, and the formerly separate colonial towns of Coyoacán, San Ángel, and San Jerónimo. Along Avenida Insurgentes from Paseo de la Reforma, near the center, south past the World Trade Center and UNAM university towards the Periférico ring road, is another important corridor of corporate office space. The far southern boroughs of Xochimilco and Tláhuac have a significant rural population with Milpa Alta being entirely rural. COUNT 4
QSN1 What type of population lives in Tiahuac? ANS1 rural QSN2 How is Milpa Alta constructed?  ANS2 entirely rural QSN3 Where is the World Trade Center? ANS3 Along Avenida Insurgentes QSN4 What is the name of one of the rich neighborhoods south of the city? ANS4 Colonia del Valle