Segment a text with newlines in it

[julkhami]

Would anyone know how to segment a text if there are newline characters breaking up a paragraph into lines? I.e., we could just delete newline characters before we put it into this tool, but the problem is sometimes newlines correctly keep separate lines apart, like a chapter title and the author on the line below. How can we automatically join lines that are a part of a paragraph but keep separate lines that are chapter titles and so on? Thank you very much