| Typicality: | 0.565 |
| Saliency: | 0.564 |
| in operation | 4 | other |
| seldom | 2 | temporal |
| as fuel consumption increase | 2 | other |
| boiler → work at → peak efficiency | 20 |
| boiler → work at → maximum efficiency | 13 |
| boiler → operate at → maximum efficiency | 6 |
| boiler → operate at → peak efficiency | 5 |
| boiler → run at → peak efficiency | 3 |
| negative | neutral | positive |
| 0.032 | 0.363 | 0.605 |
| Raw frequency | 47 |
| Normalized frequency | 0.564 |
| Modifier score | 1.000 |
| Perplexity | 95.484 |