Question: Bilakah kali terakhir letusan gunung berapi berlaku di Amerika Syarikat
Answer: 2018; 2018; 1980-05-18; 05/18/1980; 1980 may, 18; 18-05-1980; 05 18 1980; 1980 Mei 18; 1980 05 18; 18/05/1980; 18 Mei 1980; 18 05 1980; 1980-05-18; 05-18-1980