| really | 22 | degree |
| generally | 4 | degree |
| boiler → be → expensive | 27 |
| boiler → be expensive to → purchase | 8 |
| boiler → be expensive to → install | 5 |
| boiler → be expensive to → run | 5 |
| negative | neutral | positive |
| 0.416 | 0.415 | 0.169 |
| Raw frequency | 45 |
| Normalized frequency | 0.555 |
| Modifier score | 0.500 |
| Perplexity | 113.556 |