南海 なんかいトラフ巨大 きょだい地震 じしんでしょう
nankai torafu kyodai jishindeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 南海トラフ巨大地震

1. Probably a massive Nankai Trough earthquake.

Polite
Presumptive
Conjecture