name the military conflict whose commander was humberto de alencar castelo branco and took place in brazil ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_commander dbr_Humberto_de_Alencar_Castelo_Branco sep_dot var_uri dbo_place dbr_Brazil sep_dot var_uri a dbo_MilitaryConflict brack_close