| more generally | 4 | degree |
| in such cases | 3 | temporal |
| to make judgements | 2 | purpose |
| historian → have → duty | 9 |
| historian → have → obligation | 5 |
| historian → have → professional obligation | 3 |
| historian → perform → duty | 3 |
| negative | neutral | positive |
| 0.118 | 0.736 | 0.146 |
| Raw frequency | 20 |
| Normalized frequency | 0.485 |
| Modifier score | 0.500 |
| Perplexity | 89.403 |