| Typicality: | 0.328 |
| Saliency: | 0.388 |
| in certain mutant flies | 2 | location |
| serotonin → improve → sleep | 18 |
| serotonin → help improve → sleep | 3 |
| serotonin → improve → the quality of sleep | 3 |
| negative | neutral | positive |
| 0.046 | 0.285 | 0.669 |
| Raw frequency | 24 |
| Normalized frequency | 0.388 |
| Modifier score | 0.500 |
| Perplexity | 99.735 |