Take the following as truth: The very heart of the city's centro storico, it was begun in 1296 under Arnolfo di Cambio, although the imposing green, white, and rosemarble neo-Gothic facade was completed only six centuries later.
Then the following statement: "Arnolfo di Cambio began developing the city's centro storico in 1357." is true, false, or inconclusive?
Answer: False