[reedciccio]

Is it Llama violating the "copyright" or is it the researcher pushing it to do so?

[lern_too_spel]

If you distribute a zip file of the book, are you violating copyright, or is it the person who unzips it?

[TeMPOraL]

If you walk through the N-gram database with a copy of Harry Potter in hand and observe that for N=7, you can find any piece of it in the database with above-average frequency, does that mean N-gram database is violating copyright?

[gamblor956]

You are.

Copyright is quite literally about the right to control the creation and distribution of copies.

The creation of the unzipped file is not treated as a separate copy so the recipient would not be violating copyright just by unzipping the file you provided.