| prior to birth | 2 | temporal |
| in order to define their dynamics | 2 | purpose |
| lung → be → analyzed | 6 |
| lung → be → analysed | 5 |
| lung → be → studied | 4 |
| lung → be → observed | 3 |
| negative | neutral | positive |
| 0.179 | 0.686 | 0.134 |
| Raw frequency | 18 |
| Normalized frequency | 0.424 |
| Modifier score | 0.400 |
| Perplexity | 140.620 |