| as breathing | 7 | manner |
| for them | 7 | transitive-object |
| to humans | 6 | transitive-object |
| learning → be → natural | 67 |
| learning → be → natural process | 29 |
| learning → become → natural | 7 |
| learning → come → natural | 3 |
| negative | neutral | positive |
| 0.059 | 0.405 | 0.536 |
| Raw frequency | 106 |
| Normalized frequency | 0.494 |
| Modifier score | 1.000 |
| Perplexity | 114.986 |