日経にっけい先物さきものじゃありませんでした
nikkeini nigosaki monojārimasendeshita

Noun
Desu Copula

The polite, past negative form of 日経225先物

1. Was not Nikkei 225 futures.; Wasn't a Nikkei 225 future.

Past/Perfective
Negative
Polite
Terminal Form