| naturally | 6 | manner |
| mainly | 2 | degree |
| serotonin → be found in → the brain | 34 |
| serotonin → be located in → the brain | 3 |
| serotonin → be found in → brain | 3 |
| serotonin → be found in → your brain | 3 |
| negative | neutral | positive |
| 0.140 | 0.698 | 0.163 |
| Raw frequency | 43 |
| Normalized frequency | 0.497 |
| Modifier score | 0.867 |
| Perplexity | 10.150 |