| to understanding those things | 12 | purpose |
| to the reason | 8 | other |
| in my opinion | 5 | other |
| history → be → key | 20 |
| history → be → the key | 12 |
| negative | neutral | positive |
| 0.145 | 0.603 | 0.252 |
| Raw frequency | 32 |
| Normalized frequency | 0.449 |
| Modifier score | 0.600 |
| Perplexity | 183.908 |