| The great deflation of the northern economy occurred with the rupturing of the Mackenzie Valley pipe dream. |
| The coach's latest blowup occurred when one of his players arrived late. |
| In 1889 a severe passenger train wreck occurred near Dijon, when a 2-4-2 engine derailed while going full speed downhill. |
| When problems occurred during the launch, it was necessary to abort. |
| The Games were a huge success and none of the threatened disturbances occurred. |
| The book describes the changes that have occurred in the landscape over many millennia. |
