11.   The revolution had an element of revenge, as the big-band singer who had once been relegated to a supporting role revived swing in his own image.

12.   The revolution had great ideas in the beginning.

13.   The revolution had an inauspicious start.

14.   The revolution unarguably has had a dark side.

15.   This decorous revolution could have important consequences.

16.   This new Spanish revolution has yet to have a major impact on the United States.

17.   The revolution had a fascinating cast of characters.

18.   To be effective, the engine revolutions have to be above a certain threshold value.