| to its economy | 9 | transitive-object |
| to feeding product | 4 | transitive-object |
| port → be → key | 14 |
| port → be → the key | 4 |
| port → be → key player | 3 |
| negative | neutral | positive |
| 0.010 | 0.422 | 0.568 |
| Raw frequency | 21 |
| Normalized frequency | 0.312 |
| Modifier score | 0.500 |
| Perplexity | 292.147 |