法定 ほうてい がい公共 こうきょう ものでしょう
hōteiga ikō kyō monodeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 法定外公共物

1. Probably public property not covered by law.; Probably an unlisted public asset.

Polite
Presumptive
Conjecture
Law