| from white willow bark | 5 | other |
| originally | 4 | manner |
| from the compound salicylic acid | 4 | other |
| aspirin → be → derived | 17 |
| aspirin → be → produced | 4 |
| aspirin → be → synthesized | 3 |
| aspirin → be → developed | 3 |
| negative | neutral | positive |
| 0.099 | 0.807 | 0.094 |
| Raw frequency | 27 |
| Normalized frequency | 0.594 |
| Modifier score | 0.500 |
| Perplexity | 210.731 |