| Typicality: | 0.289 |
| Saliency: | 0.372 |
| for many decades | 6 | temporal |
| sometimes | 4 | temporal |
| cooperation → be difficult to → achieve | 10 |
| cooperation → prove → difficult | 5 |
| cooperation → become → difficult | 3 |
| cooperation → remain → difficult | 3 |
| negative | neutral | positive |
| 0.435 | 0.413 | 0.152 |
| Raw frequency | 21 |
| Normalized frequency | 0.372 |
| Modifier score | 0.400 |
| Perplexity | 39.794 |