| Typicality: | 0.279 |
| Saliency: | 0.273 |
| a year | 4 | temporal |
| in order to allow | 4 | purpose |
| to help maintain environmental health | 3 | purpose |
| volunteer → spend → thousands of hours | 5 |
| volunteer → put in → thousands of hours | 4 |
| volunteer → spent → thousands of hours | 4 |
| negative | neutral | positive |
| 0.050 | 0.472 | 0.478 |
| Raw frequency | 13 |
| Normalized frequency | 0.273 |
| Modifier score | 0.500 |
| Perplexity | 23.681 |