| Typicality: | 0.435 |
| Saliency: | 0.562 |
| very | 5 | degree |
| according to the green car journal | 2 | other |
| often | 2 | temporal |
| natural gas → be → clean fuel | 12 |
| natural gas → be → clean-burning fuel | 8 |
| natural gas → be → clean burning fuel | 6 |
| natural gas → be → clean-burning fossil fuel | 3 |
| natural gas → be → clean-burning alternative fuel | 3 |
| negative | neutral | positive |
| 0.106 | 0.431 | 0.462 |
| Raw frequency | 32 |
| Normalized frequency | 0.562 |
| Modifier score | 0.600 |
| Perplexity | 16.163 |