This book is a revised version of my dissertation that I submitted in Leipzig in
2018. First and foremost, I want to thank my two supervisors, Martin Haspelmath
and Barbara Stiebels. Thank you for having been such a great team of supervisors,
who gave me a lot of freedom in developing my dissertation project, but who were
always there to stop me from pursuing silly or unrealistic ideas, and to discuss my
questions and to give me valuable feedback from both a theoretical and a typological perspective. I further wish to thank Klaus von Heusinger - this book would not
have the form it has without his detailed comments from yet another perspective.