| with a side reboiler | 4 | other |
| in these cases | 3 | temporal |
| steam → be → required | 14 |
| steam → be → necessary | 8 |
| steam → be required for → process | 3 |
| negative | neutral | positive |
| 0.092 | 0.783 | 0.125 |
| Raw frequency | 25 |
| Normalized frequency | 0.509 |
| Modifier score | 0.500 |
| Perplexity | 78.029 |