| very | 5 | degree |
| till the 6th century bc | 2 | temporal |
| history → be → unclear | 9 |
| history → be not → clear | 8 |
| history → be → confused | 4 |
| negative | neutral | positive |
| 0.241 | 0.729 | 0.030 |
| Raw frequency | 21 |
| Normalized frequency | 0.428 |
| Modifier score | 0.500 |
| Perplexity | 122.003 |