| for several years | 7 | temporal |
| since the last four decades | 4 | temporal |
| with the use of iterative reconstruction | 4 | cause |
| attempt → be → ongoing | 45 |
| attempt → be → continued | 8 |
| attempt → be → maintained | 7 |
| negative | neutral | positive |
| 0.235 | 0.652 | 0.113 |
| Raw frequency | 60 |
| Normalized frequency | 0.356 |
| Modifier score | 0.750 |
| Perplexity | 78.800 |