| very | 30 | degree |
| highly | 22 | degree |
| more energy | 13 | degree |
| motor → be → efficient | 180 |
| motor → be designed to be → efficient | 4 |
| motor → be → fuel-efficient | 4 |
| negative | neutral | positive |
| 0.039 | 0.260 | 0.700 |
| Raw frequency | 188 |
| Normalized frequency | 0.768 |
| Modifier score | 0.850 |
| Perplexity | 316.270 |