同族 どうぞく目的 もくてき でしょう
dōzokumokutekigodeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 同族目的語

1. Probably the same kind of object.; Likely a co-referential object.

Polite
Presumptive
Conjecture
Linguistics