Task: Question Understanding
Input (English): Context : On 15 April 2008, Hewa Bora Airways Flight 122, a McDonnell Douglas DC-9-51 plane crashed into a residential and market area of Goma of the Democratic Republic of the Congo immediately south of Goma International Airport. 
Question : On what date did Hewa Bora Airways Flight 122 take place?
Output (English): point in time