| by growing industrial | 6 | other |
| by increasing awareness of the fact | 5 | cause |
| by coal | 2 | other |
| growth → be → fueled | 9 |
| growth → be → fuelled | 7 |
| growth → be → propelled | 3 |
| negative | neutral | positive |
| 0.075 | 0.296 | 0.629 |
| Raw frequency | 19 |
| Normalized frequency | 0.348 |
| Modifier score | 0.900 |
| Perplexity | 468.979 |