what is the military conflict whose commanders are salva kiir mayardit and sadiq al-mahdi ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_commander dbr_Salva_Kiir_Mayardit sep_dot var_uri dbo_commander dbr_Sadiq_al-Mahdi sep_dot var_uri a dbo_MilitaryConflict brack_close