| Typicality: | 0.422 |
| Saliency: | 0.402 |
| for living systems | 9 | purpose |
| for animals | 3 | transitive-object |
| ammonia → be → a source of nitrogen | 9 |
| ammonia → be → important source of nitrogen | 6 |
| ammonia → be used as → the nitrogen source | 3 |
| negative | neutral | positive |
| 0.337 | 0.580 | 0.082 |
| Raw frequency | 18 |
| Normalized frequency | 0.402 |
| Modifier score | 0.500 |
| Perplexity | 18.888 |