Отрицательный - Wasn't Rob in Russia two years ago?
Общий - Was Rob in Russia two years ago?
Альтеративный - 1) Was Rob in Russia two or three years ago? 2) Was Rob in Spain or in Russia two years ago?
Специальный - 1) Who was in Russia two years ago? 2) Where was Rob two years ago? 3) When was Rob in Russia?
Разделительный - Rob was in Russia two years ago, wasn't he?