| each time | 9 | temporal |
| in the west | 9 | location |
| quite often | 3 | degree |
| lightning → be → observed | 29 |
| lightning → be → visible | 25 |
| lightning → be → sighted | 7 |
| lightning → be → spotted | 4 |
| lightning → be → witnessed | 4 |
| negative | neutral | positive |
| 0.187 | 0.697 | 0.116 |
| Raw frequency | 69 |
| Normalized frequency | 0.762 |
| Modifier score | 0.575 |
| Perplexity | 235.092 |