祖先 そせん形質 けいしつ共有 きょうゆうじゃありませんでした
sosenkeishitsu kyō yūja arimasendeshita

Noun
Desu Copula

The polite, past negative form of 祖先形質共有

1. Was not an ancestral trait.; Was not a shared ancestral characteristic.

Past/Perfective
Negative
Polite
Terminal Form