| by 2020 | 3 | temporal |
| actively | 2 | manner |
| to reducing sox emissions | 2 | purpose |
| ship → have → scrubber | 14 |
| ship → use → scrubber | 9 |
| negative | neutral | positive |
| 0.244 | 0.604 | 0.153 |
| Raw frequency | 23 |
| Normalized frequency | 0.321 |
| Modifier score | 0.533 |
| Perplexity | 174.970 |