I want to know the answer to the following question:
How man boroughs was the borough of Mexico City split into in 1970?
All the background I'm provided with is that "In 1970 Mexico City was split into four different delegaciones: Cuauhtémoc, Miguel Hidalgo, Venustiano Carranza and Benito Juárez, increasing the number of delegaciones to sixteen.". Is that enough to answer the question?