| across the nation | 7 | location |
| prior to use | 3 | purpose |
| formally | 2 | manner |
| protocol → be → approved | 96 |
| protocol → receive → approval | 4 |
| protocol → be approved for → implementation | 3 |
| negative | neutral | positive |
| 0.071 | 0.733 | 0.196 |
| Raw frequency | 103 |
| Normalized frequency | 0.648 |
| Modifier score | 1.000 |
| Perplexity | 351.824 |