| on environment | 7 | transitive-object |
| on the number of phage infections | 4 | transitive-object |
| iron → have → effect | 7 |
| iron → do → negative impact | 3 |
| iron → have → negative effect | 3 |
| negative | neutral | positive |
| 0.490 | 0.479 | 0.032 |
| Raw frequency | 13 |
| Normalized frequency | 0.269 |
| Modifier score | 0.500 |
| Perplexity | 107.553 |