| during the fabrication process | 6 | temporal |
| from the base metals | 3 | other |
| least partially | 2 | degree |
| impurity → be → added | 19 |
| impurity → be → introduced | 14 |
| negative | neutral | positive |
| 0.204 | 0.713 | 0.083 |
| Raw frequency | 33 |
| Normalized frequency | 0.558 |
| Modifier score | 0.700 |
| Perplexity | 107.781 |