| Typicality: | 0.431 |
| Saliency: | 0.537 |
| reasonably | 5 | degree |
| to assure purity | 5 | purpose |
| in the patent | 3 | location |
| specification → be → required | 48 |
| specification → be → necessary | 23 |
| specification → be → desired | 6 |
| specification → be → need | 3 |
| specification → be deemed → necessary | 3 |
| specification → be necessary to → meet its needs | 3 |
| negative | neutral | positive |
| 0.098 | 0.808 | 0.094 |
| Raw frequency | 86 |
| Normalized frequency | 0.537 |
| Modifier score | 0.350 |
| Perplexity | 206.494 |