| in closed systems | 4 | location |
| successfully | 3 | manner |
| to produce offspring | 2 | purpose |
| organism → be able to → reproduce | 15 |
| organism → can → reproduce | 13 |
| negative | neutral | positive |
| 0.264 | 0.587 | 0.149 |
| Raw frequency | 28 |
| Normalized frequency | 0.518 |
| Modifier score | 0.550 |
| Perplexity | 82.306 |