乳児 にゅうじ死亡 しぼう りつじゃなかったです
nyūjishibōritsujanakattadesu

Noun
Desu Copula

The polite, past negative form of 乳児死亡率

1. Infant mortality rate was not.; It wasn't the infant mortality rate.

Past/Perfective
Negative
Polite
Casual Register