ona li kama sona e soweli en kasi.

English Translation

He is a biologist.

I don’t think en can be used for anything other than having multiple subjects.

English Translation

He is a biologist.

Just checked the source: https://tatoeba.org/en/sentences/show/1871261

Seems like it’s been recently corrected to ona li jan sona soweli kasi, which sounds a lot better.

How often do the sentences get updated when the Tatoeba source gets updated? Or does it get updated at all?