shouldn't gutenberg_book_text return just the content of the book?

[esaule]

can someone look at function DataSource::gutenberg_book_text() ?

The return value seem awkward. Why do we want a dictionary as a return type? Why not directly return the text itself?

[krs-world]

It is a string, from what I can tell.. check the gutenberg test - the last part gets a part of Moby Dick.