| Typicality: | 0.526 |
| Saliency: | 0.494 |
| for a long time | 18 | temporal |
| for thousands of years | 7 | temporal |
| after emission | 4 | temporal |
| gas → remain in → the atmosphere | 22 |
| gas → stay in → the atmosphere | 10 |
| gas → remain in → earth’s atmosphere | 7 |
| gas → persist in → the atmosphere | 4 |
| gas → survive in → the atmosphere | 4 |
| negative | neutral | positive |
| 0.238 | 0.673 | 0.089 |
| Raw frequency | 47 |
| Normalized frequency | 0.494 |
| Modifier score | 0.700 |
| Perplexity | 53.072 |