| in keeping with this requirement | 7 | other |
| toward safety | 4 | purpose |
| railroad → have → duty | 35 |
| railroad → have → obligation | 12 |
| railroad → have → the duty | 3 |
| negative | neutral | positive |
| 0.249 | 0.661 | 0.090 |
| Raw frequency | 50 |
| Normalized frequency | 0.573 |
| Modifier score | 0.500 |
| Perplexity | 325.661 |