Title: Nanjing.
Question: When was Nanjing announced as the host city for the 2nd Summer Youth Olympic Games?

Title: Bird migration.
Question: When do large birds of pray migrate?

Title: Military history of the United States.
Question: What term describes the overall US strategy in the Pacific in WWII?

Title: Genocide.
Question:
While recognizing genocide, what did the UN General Assembly fail to do in its resolution?