| from the vacuum | 12 | other |
| from the field | 7 | location |
| from the electrons | 6 | other |
| energy → be → obtained | 26 |
| energy → be → extracted | 23 |
| energy → be → derived | 12 |
| negative | neutral | positive |
| 0.094 | 0.779 | 0.127 |
| Raw frequency | 61 |
| Normalized frequency | 0.711 |
| Modifier score | 0.167 |
| Perplexity | 380.864 |