| in bio-available form | 2 | other |
| walnut → contain → melatonin | 30 |
| walnut → be → natural source of melatonin | 3 |
| walnut → have → melatonin | 3 |
| negative | neutral | positive |
| 0.017 | 0.421 | 0.562 |
| Raw frequency | 36 |
| Normalized frequency | 0.592 |
| Modifier score | 0.500 |
| Perplexity | 128.182 |