私設 しせつ馬券 ばけん ではありませんでした
shisetsubaken'yadewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 私設馬券屋

1. Was not an illegal bookmaker.; Was not a privately-run betting shop.

Past/Perfective
Negative
Polite
Formal Register