| very | 7 | degree |
| far more | 5 | degree |
| as a resource | 5 | manner |
| gas → be → efficient | 28 |
| gas → be → more efficient | 13 |
| gas → be → efficient fuel | 5 |
| gas → be → more energy efficient | 3 |
| negative | neutral | positive |
| 0.050 | 0.322 | 0.627 |
| Raw frequency | 49 |
| Normalized frequency | 0.501 |
| Modifier score | 0.800 |
| Perplexity | 186.103 |