actor1: Military Forces of South Sudan (2011-)
actor2: UNMISS: United Nations Mission in the Republic of South Sudan (2011-)
notes: The United Nations claim that South Sudans armed forces have shot down a U.N. helicopter killing all four Russian crew members on board
target_text: actor1: Military Forces of South Sudan (2011-), actor2: UNMISS: United Nations Mission in the Republic of South Sudan (2011-)