| for the photovoltaic cells | 6 | transitive-object |
| for producing a class of plastics | 5 | purpose |
| to more | 5 | degree |
| silver → be → essential | 23 |
| silver → be → necessary | 12 |
| negative | neutral | positive |
| 0.160 | 0.499 | 0.342 |
| Raw frequency | 35 |
| Normalized frequency | 0.591 |
| Modifier score | 1.000 |
| Perplexity | 148.510 |