無主 むしゅ ぶつ先占 せんせんじゃなかったです
mushubutsu sensenjanakattadesu

Noun
Desu Copula

The polite, past negative form of 無主物先占

1. Wasn't unclaimed.; Wasn't ownerless.

Past/Perfective
Negative
Polite
Casual Register
Law