| naturally | 5 | manner |
| during the manufacturing process | 3 | temporal |
| from the electrodes | 3 | other |
| impurity → be → generated | 7 |
| impurity → form → the source | 7 |
| impurity → be → occurring | 5 |
| negative | neutral | positive |
| 0.225 | 0.746 | 0.029 |
| Raw frequency | 19 |
| Normalized frequency | 0.429 |
| Modifier score | 0.900 |
| Perplexity | 280.724 |