If it is “public domain”, then it counts as CC0, so that is ok. But in any case if the sentences are poorly segmented, I think probably we’d want to delete them anyway and just re-import them.
As for poetry, I think this is not the ideal text… we want stuff that is dialoguey as far as possible. Think software with voice interaction. As much fun as it might be to talk in Turkish or Ottoman poetry with my GPS assistant, perhaps we should start with more day-to-day texts
Having a Turkish community subforum sounds like an excellent idea. We could do it with a Matrix chat, or perhaps ask for a subforum on Discourse?