| Typicality: | 0.545 |
| Saliency: | 0.432 |
| by simple lifeforms | 6 | other |
| by a variety of sources | 5 | other |
| almost exclusively | 4 | degree |
| methane → be produced on → earth | 13 |
| methane → be produced by → human activity | 5 |
| methane → be produced by → life | 5 |
| negative | neutral | positive |
| 0.347 | 0.570 | 0.082 |
| Raw frequency | 23 |
| Normalized frequency | 0.432 |
| Modifier score | 0.843 |
| Perplexity | 145.862 |