The Nanking Massacre was an episode of mass murder and mass rape committed by Japanese troops against the residents of Nanjing ("Nanking"), then the capital of the Republic of China, during the Second Sino-Japanese War. The massacre is also known as the Rape of Nanking or, using Pinyin romanization, the Nanjing Massacre or Rape of Nanjing.

Based on that paragraph can we conclude that this sentence is true?
Nanjing is still the capital of the Republic of China
It's impossible to say