sediment → contain → pcb | 14 |
sediment → be contaminated with → pcb | 8 |
sediment → be contaminated by → pcb | 3 |
negative | neutral | positive |
0.690 | 0.277 | 0.033 |
Raw frequency | 25 |
Normalized frequency | 0.461 |
Modifier score | 0.500 |
Perplexity | 109.162 |