| as a faint bubble of gas | 7 | other |
| no longer | 5 | temporal |
| from emission lines | 2 | location |
| gas → be → visible | 14 |
| gas → be → shown | 10 |
| gas → be → observed | 5 |
| gas → be → spotted | 3 |
| negative | neutral | positive |
| 0.183 | 0.699 | 0.117 |
| Raw frequency | 32 |
| Normalized frequency | 0.425 |
| Modifier score | 0.000 |
| Perplexity | 421.772 |