| on reducing our stress | 3 | transitive-object |
| on u.s. highway | 2 | location |
| on surface air quality | 2 | transitive-object |
| smoke → have → impact | 4 |
| smoke → have → direct effect | 3 |
| negative | neutral | positive |
| 0.272 | 0.468 | 0.260 |
| Raw frequency | 7 |
| Normalized frequency | 0.155 |
| Modifier score | 0.500 |
| Perplexity | 46.024 |