sentences:  In 2007, Jens Wernicke and Torsten Bultmann published an anthology, entitled "Netzwerk der Macht – Bertelsmann" ("Network of Power – Bertelsmann"), which takes a critical look at the structure and activities of the Bertelsmann Stiftung.The book's 30 contributors focused in particular on the foundation's non-profit status and political influence.The anthology generated widespread public debate on the Bertelsmann Stiftung.