| from the center | 10 | location |
| by burning natural gas | 5 | cause |
| from the boiler | 5 | other |
| steam → be → generated | 139 |
| steam → be → created | 40 |
| negative | neutral | positive |
| 0.118 | 0.764 | 0.118 |
| Raw frequency | 179 |
| Normalized frequency | 0.982 |
| Modifier score | 0.325 |
| Perplexity | 304.978 |