| for safe operation | 9 | purpose |
| for drinking | 6 | purpose |
| for play | 6 | purpose |
| accessory → be → essential | 37 |
| accessory → be → must | 16 |
| accessory → be → necessity | 4 |
| negative | neutral | positive |
| 0.039 | 0.451 | 0.510 |
| Raw frequency | 57 |
| Normalized frequency | 0.618 |
| Modifier score | 0.400 |
| Perplexity | 136.868 |