| from the rat viruses | 13 | other |
| by studying it | 4 | manner |
| at the time | 3 | temporal |
| scientist → have → clue | 9 |
| scientist → get → clue | 8 |
| scientist → glean → clue | 5 |
| scientist → gain → clue | 4 |
| scientist → tease out → clue | 3 |
| scientist → find → hint | 3 |
| negative | neutral | positive |
| 0.121 | 0.701 | 0.177 |
| Raw frequency | 32 |
| Normalized frequency | 0.418 |
| Modifier score | 0.900 |
| Perplexity | 52.991 |