| of the stomach | 5 | other |
| in mammals | 2 | other |
| tube → lead to → lung | 6 |
| tube → be inserted into → lung | 5 |
| tube → go into → lung | 4 |
| tube → enter → lung | 3 |
| negative | neutral | positive |
| 0.322 | 0.639 | 0.039 |
| Raw frequency | 18 |
| Normalized frequency | 0.334 |
| Modifier score | 0.450 |
| Perplexity | 156.100 |