| during the tang dynasty | 2 | temporal |
| based on economic need | 2 | cause |
| between 1835 | 2 | temporal |
| county → be → added | 19 |
| county → be added to → the list | 4 |
| negative | neutral | positive |
| 0.096 | 0.822 | 0.083 |
| Raw frequency | 23 |
| Normalized frequency | 0.349 |
| Modifier score | 0.300 |
| Perplexity | 47.358 |