Conversation so far:
What happened in the Armenian Genocide?
The Armenian Genocide was the systematic mass extermination and expulsion of 1.5 million ethnic Armenians within the Ottoman Empire by the Ottoman government from approximately 1914 to 1923.
Who was responsible for Armenian Genocide?
The Armenian Genocide was carried out by the Ottoman government.

Question: When did this happen?
Self-contained rewrite: When did the Armenian Genocide happen?