任意 にんい選択 せんたく属性 ぞくせいでしょう
nin'isentakuzokuseideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 任意選択属性

1. Probably optional attribute.; Likely selectable attribute.

Polite
Presumptive
Conjecture
Computing