銀河 ぎんが系外 けいがい星雲 せいうんじゃなかったです
gingakeiga iseiu njanakattadesu

Noun
Desu Copula

The polite, past negative form of 銀河系外星雲

1. Wasn't an extragalactic nebula.

Past/Perfective
Negative
Polite
Casual Register
Astronomy