| over the last decade | 7 | temporal |
| despite several failed attempts | 3 | other |
| scientist → be able to → prove | 39 |
| scientist → can → prove | 19 |
| scientist → could → prove | 9 |
| scientist → be able to → prove that | 4 |
| negative | neutral | positive |
| 0.178 | 0.586 | 0.237 |
| Raw frequency | 71 |
| Normalized frequency | 0.559 |
| Modifier score | 0.000 |
| Perplexity | 30.134 |