| Typicality: | 0.483 |
| Saliency: | 0.497 |
| over time | 4 | temporal |
| like any other mechanical equipment | 2 | other |
| gradually | 2 | manner |
| boiler → lose → their efficiency | 20 |
| boiler → lose → efficiency | 9 |
| boiler → lose → its efficiency | 5 |
| negative | neutral | positive |
| 0.750 | 0.230 | 0.020 |
| Raw frequency | 34 |
| Normalized frequency | 0.497 |
| Modifier score | 0.833 |
| Perplexity | 339.068 |