| very | 12 | degree |
| due to a decreasing amount of oxygen | 11 | cause |
| sometimes | 6 | temporal |
| baby → be → lethargic | 76 |
| baby → become → lethargic | 20 |
| baby → seem → lethargic | 13 |
| baby → appear → lethargic | 7 |
| baby → have → lethargy | 7 |
| negative | neutral | positive |
| 0.794 | 0.192 | 0.014 |
| Raw frequency | 123 |
| Normalized frequency | 0.525 |
| Modifier score | 0.587 |
| Perplexity | 34.575 |