寄生 きせい生物 せいぶつではありませんでした
kiseiseibutsudewārimasendeshita

Noun
Desu Copula
no-Adjective

The polite, past negative form of 寄生生物

1. Was not a parasite.; Was not a parasitic organism.

Past/Perfective
Negative
Polite
Formal Register