| Typicality: | 0.478 |
| Saliency: | 0.154 |
| since at least 240 bc | 2 | temporal |
| comet → be discovered by → astronomer | 4 |
| comet → be recorded by → astronomer | 3 |
| negative | neutral | positive |
| 0.022 | 0.789 | 0.189 |
| Raw frequency | 7 |
| Normalized frequency | 0.154 |
| Modifier score | 1.000 |
| Perplexity | 479.257 |