| Typicality: | 0.416 |
| Saliency: | 0.388 |
| widely | 4 | degree |
| at the tindal raaf base | 3 | location |
| for decades | 3 | temporal |
| chemical → be used in → firefighting foam | 15 |
| chemical → be used in → firefighting foams | 9 |
| chemical → be used in → fire-fighting foam | 4 |
| chemical → be found in → firefighting foam | 3 |
| negative | neutral | positive |
| 0.463 | 0.513 | 0.024 |
| Raw frequency | 31 |
| Normalized frequency | 0.388 |
| Modifier score | 0.500 |
| Perplexity | 18.230 |