| Typicality: | 0.532 |
| Saliency: | 0.661 |
| by animals | 5 | other |
| in feeding the world's population | 3 | transitive-object |
| urea → serve → important role | 8 |
| urea → play → role | 6 |
| urea → play → vital role | 5 |
| negative | neutral | positive |
| 0.031 | 0.748 | 0.221 |
| Raw frequency | 19 |
| Normalized frequency | 0.661 |
| Modifier score | 0.500 |
| Perplexity | 197.088 |