| from coal | 6 | other |
| from an existing high energy source | 5 | other |
| easily | 4 | manner |
| fuel → be → made | 36 |
| fuel → be → manufactured | 12 |
| negative | neutral | positive |
| 0.115 | 0.656 | 0.229 |
| Raw frequency | 48 |
| Normalized frequency | 0.538 |
| Modifier score | 0.950 |
| Perplexity | 260.250 |