No afaik.

You cannot copy an exact sentence. But if you change word order (or replace words with synonims), this will be a different sentence.

The license for Tatoeba content is CC 2.0 attribution or more permissive; https://creativecommons.org/licenses/by/2.0/fr/.

This means that if you find content that you can relicense under this license, you can add it to Tatoeba.

I recommend looking for content that is not protected at all by copyright. This includes public domain material (USA legislation) and material with expired copyright. Be careful, though; the expiration date of copyright varies by jurisdiction. But, in general, material that is two hundred years old or more should be safe. But always check, and also check the extent to which international copyright law applies.

There are specific projects that collect material free from intellectual monopoly ("copyright") restrictions. You might also look into these.

People can help you more if you give the language you want material in, and what kind of material is interesting to you.

Other alternatives are:

Portuguese vocabulary people would like to see more of: https://tatoeba.org/deu/Vocabul..._sentences/por . Adding sentences that use those would be a service to the corpus.

Long English sentences (native, audio) without Portuguese translations: https://tatoeba.org/deu/sentenc...rt_reverse=yes

You can easily modify that to Japanese or French, if you prefer, but also alternating between the languages might bring variety.

Find an interesting tag at https://tatoeba.org/deu/tags/view_all and translate sentences with it, or find a keyword or two and search for non-translated material with those. If you like and know about animals, search for "snake" or "serpent", for example.