| to life | 9 | other |
| to climate | 8 | transitive-object |
| in the twenty-first century | 6 | temporal |
| ocean → be → key | 17 |
| ocean → be → the key | 13 |
| negative | neutral | positive |
| 0.062 | 0.548 | 0.390 |
| Raw frequency | 30 |
| Normalized frequency | 0.454 |
| Modifier score | 0.500 |
| Perplexity | 363.901 |