Task: Question Generation
Input (English): The Mogadishu-based Somali National Television is the principal national public service broadcaster. On March 18, 2011, the Ministry of Information of the Transitional Federal Government began experimental broadcasts of the new TV channel. After a 20-year hiatus, the station was shortly thereafter officially re-launched on April 4, 2011. SNTV broadcasts 24 hours a day, and can be viewed both within Somalia and abroad via terrestrial and satellite platforms.
Output (English): What year did experimental broadcasts of Somali National Television begin?