| 1 | The episode should serve as a warning to Europeans. | |
| 2 | He had two warnings for the commercial human spaceflight community. | |
| 3 | Worry is the warning light that God has been shoved to the sideline. | |
| 4 | 'The government data might be a warning, ' says Mr. Shiller. | |
| 5 | For China, events in Zambia should be a warning sign. |