| to allow | 5 | purpose |
| at the station | 4 | location |
| automatically | 2 | manner |
| train → open → door | 13 |
| train → open → its doors | 8 |
| train → open → their doors | 5 |
| train → open → the door | 3 |
| negative | neutral | positive |
| 0.174 | 0.691 | 0.135 |
| Raw frequency | 29 |
| Normalized frequency | 0.407 |
| Modifier score | 1.000 |
| Perplexity | 211.015 |