| as a means | 9 | manner |
| well | 8 | degree |
| for large-scale storage | 7 | purpose |
| hydrogen → be → useful | 15 |
| hydrogen → be → suitable | 8 |
| hydrogen → be → desirable | 4 |
| hydrogen → be → suited | 4 |
| hydrogen → be → advantageous | 3 |
| negative | neutral | positive |
| 0.028 | 0.255 | 0.717 |
| Raw frequency | 34 |
| Normalized frequency | 0.451 |
| Modifier score | 0.500 |
| Perplexity | 60.498 |