Take the following as truth: Indeed, the city's distinct geography allowed most of its older neighborhoods to survive the terrible destruction wrought by the second atomic bomb to be dropped on Japan, on 9 August 1945 despite the fact that the Nagasaki bomb was more powerful than the one dropped on Hirosema three days earlier.
Then the following statement: "Most of the older neighborhoods were destroyed from an atomic bomb." is true, false, or inconclusive?