license of punkt in nltk_data

[happyMindHaha]

Is it possible to use punkt in nltk_data for commercial use freely?
What is the license of punkt in nltk_data?

Thank you.

[stevenbird]

@janstrunk do you have any advice please?

[realchandan]

I have the same question. Some other models clearly mention their licenses. Since it's not explicitly mentioned there, I'd assume it's not open-sourced.

[ykirpichev]

@ekaf I saw you've closed #236.

I would like to let you know that I also have a #239.

Could you please clarify what is the main issues with those two components: punkt in nltk_data ?
Why pull request can't be simply submitted?

[ekaf]

Hi @ykirpichev, let's see how it goes, now that you have submitted your PR.
I think that the authors' initial intention was to opensource Punkt.
But it seems that nobody can or wants to provide a legally binding confirmation.