| Typicality: | 0.437 |
| Saliency: | 0.492 |
| very | 12 | degree |
| to perform using visible light | 9 | purpose |
| often | 6 | degree |
| application → be → difficult | 87 |
| application → be → tough | 13 |
| application → be → hard | 9 |
| application → be → difficult one | 3 |
| application → prove → difficult | 3 |
| negative | neutral | positive |
| 0.440 | 0.404 | 0.157 |
| Raw frequency | 115 |
| Normalized frequency | 0.492 |
| Modifier score | 0.700 |
| Perplexity | 164.392 |