| Typicality: | 0.409 |
| Saliency: | 0.198 |
| in bringing safe drinking water | 4 | purpose |
| year → present → challenge | 4 |
| year → include → challenge | 3 |
| year → discuss → challenge | 3 |
| negative | neutral | positive |
| 0.103 | 0.408 | 0.490 |
| Raw frequency | 10 |
| Normalized frequency | 0.198 |
| Modifier score | 1.000 |
| Perplexity | 142.127 |