| often | 7 | temporal |
| merely | 4 | degree |
| problem → be related to → biology | 14 |
| problem → arise in → biology | 14 |
| problem → be found in → biology | 5 |
| problem → involve → biology | 5 |
| problem → be → biology | 4 |
| negative | neutral | positive |
| 0.175 | 0.553 | 0.272 |
| Raw frequency | 42 |
| Normalized frequency | 0.312 |
| Modifier score | 0.600 |
| Perplexity | 125.064 |