1.  As Bozeman said, that's the hard part.

2.  As always with the verbal "paradoxes" of physics, the hard part is explaining in common language how and why the phenomenon works.

3.  As Bouzereau noted in an interview, staying out of Spielberg's way was the hard part, but being there during "A.I.'s" making was invaluable.

4.  Curiously, in most amateur performances of the Missa Solemnis I have heard, sopranos get the hard parts right and do less well elsewhere.

5.  Even though Angelo does the really hard part along: the curing.

6.  Executives are learning that the hard part is often the soft side," says Barbara Berke, vice president of Boston Consulting Group.

7.  Execution is the hard part.

8.  Explaining how you're going to pay for it is the hard part, of course.

9.  Figuring out how to link the music with the audience is the hard part.

10.  Fighting killer martians was not the hard part for Weaver.