| highly | 25 | degree |
| more energy | 8 | degree |
| on the whole | 7 | degree |
| fan → be → efficient | 107 |
| fan → be → more efficient | 25 |
| fan → be → most efficient | 5 |
| fan → be designed to be → efficient | 3 |
| negative | neutral | positive |
| 0.052 | 0.283 | 0.666 |
| Raw frequency | 140 |
| Normalized frequency | 0.632 |
| Modifier score | 0.900 |
| Perplexity | 286.661 |