| Answer | Crossword Clue |
|---|---|
| FAUST | Subject of three operas. |
| CINDERELLA | Subject of many operas |
| LOSTLOVE | Subject of many operas |
| ROBOTICS | Subject of Asimov's three laws |
| MOTION | Subject of three laws of Newton |
| GULAG | Subject of a three-volume Solzhenitsyn work |
| NAM | Subject of three Oliver Stone films, informally |
| ERA | Subject of the "three-state strategy": Abbr. |
