| Typicality: | 0.409 |
| Saliency: | 0.373 |
| in the late 1970 | 2 | temporal |
| for some time | 2 | temporal |
| across the continent | 2 | location |
| concern → be raised by → academic | 20 |
| concern → be expressed by → academic | 8 |
| negative | neutral | positive |
| 0.410 | 0.479 | 0.110 |
| Raw frequency | 28 |
| Normalized frequency | 0.373 |
| Modifier score | 0.500 |
| Perplexity | 35.814 |