| Typicality: | 0.382 |
| Saliency: | 0.310 |
| by sir william grove | 6 | other |
| fuel cell → be invented in → 1839 | 7 |
| fuel cell → be invented in → 1838 | 4 |
| fuel cell → be built in → 1839 | 3 |
| negative | neutral | positive |
| 0.048 | 0.826 | 0.127 |
| Raw frequency | 14 |
| Normalized frequency | 0.310 |
| Modifier score | 0.500 |
| Perplexity | 67.519 |