通信 つうしん研究 けんきゅう しょじゃなかったです
tsūshinkenkyūshojanakattadesu

Noun
Desu Copula

The polite, past negative form of 通信研究所

1. Was not a communications research institute.; Wasn't a communications research institute.

Past/Perfective
Negative
Polite
Casual Register