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Even if it's written in the terms of use, which is supposed to be accepted by everyone who contribute
it is FORBIDDEN to add sentence which come from books / dictionaries, for the simple reason it does not belong to you, and by the way, you can't deliver them under a CC-BY licence
thanks to take care
What about books that are out of copyright?
no problem if they're in the public domain, even if sometimes it's hard to say, espcially for book which are in public domain after its author death, as the period change from a country to another
but yep, no problem for copyright-free books, or for books you've written yourself, or for those the author give you the right to use extract in Tatoeba :)
I take it, though, that you can't use "Fair use exemption" ?
I understand that whether fair use is included in copyright law depends on the country in question. (Japan doesn't, yet, but might soon http://www.cartoonleap.com/2009...nciplefinally/ )
Whether fair use applies also depends on a number of other factors (US case http://www.masters.edu/DeptPage...4&minimal=true )
for the "fair use", it will not say an absolute "NO, we can't". Because for example France, even without the "fair use" notion, authorize to make small quote of books as soon as the quotation is justified by the scientific, pedagogic information they provide to the work they're incorporated in. But after as we have no lawyer in the team, and to be honnest, other works we find more important to do than to check if we can have a safe "fair use".
Moreover I think it's better in a first time to say "no, no quotes from copyrighted books", to avoid quote from books which can not be considered as a "fair use", rather than playing with fire.
But one day, when Tatoeba will be quite near complete in feature (i.e when we will not have dozen of feature request to code and bugs to fix ^^), I try to see if it's possible or not, and then give you a clear and absolute answer.
so my answer "for the moment we will considered we can't"
Fair enough.