| for a minimum of 3 weeks | 3 | temporal |
| for 5 min | 2 | temporal |
| sample → be → vacuumed | 6 |
| sample → be placed in → vacuum | 5 |
| sample → be placed in → a vacuum chamber | 4 |
| sample → be exposed to → vacuum | 3 |
| sample → be placed under → vacuum | 3 |
| negative | neutral | positive |
| 0.244 | 0.722 | 0.034 |
| Raw frequency | 21 |
| Normalized frequency | 0.265 |
| Modifier score | 0.500 |
| Perplexity | 343.874 |