樺太 からふと千島 ちしま交換 こうかん条約 じょうやくだろう
kara futo chi shimakōkanjōyakudarō

Noun
Da Copula

Expresses probability ("probably…") of 樺太千島交換条約

1. Probably the Sakhalin-Kuril Islands Exchange Treaty.

Presumptive
Conjecture