You will be given a definition of a task first, then some input of the task.
Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.

Context : Ethiopian Airlines Flight 409 was an international commercial flight scheduled from Beirut to Addis Ababa that plunged into the Mediterranean Sea shortly after takeoff from Rafic Hariri International Airport on 25 January 2010, killing all 90 people on board.
Answer : 25 January 2010
Output:
The date of Ethiopian Airlines Flight 409 was what?