| Typicality: | 0.465 |
| Saliency: | 0.428 |
| in scientific studies | 7 | location |
| during the day | 5 | temporal |
| often | 2 | temporal |
| melatonin → induce → sleepiness | 9 |
| melatonin → promote → sleepiness | 8 |
| melatonin → cause → sleepiness | 8 |
| melatonin → be shown to increase → sleepiness | 5 |
| melatonin → cause → daytime sleepiness | 5 |
| negative | neutral | positive |
| 0.323 | 0.461 | 0.216 |
| Raw frequency | 35 |
| Normalized frequency | 0.428 |
| Modifier score | 0.600 |
| Perplexity | 24.065 |