her autobiography
...that Agatha Christie's longest book was her autobiography?
...that <a href="./Agatha_Christie" id="mwDww" rel="mw:WikiLink" title="Agatha Christie">Agatha Christie</a>'s longest book was <b id="mwDw0"><a href="./Agatha_Christie:_An_Autobiography" id="mwDw4" rel="mw:WikiLink" title="Agatha Christie: An Autobiography">her autobiography</a></b>?