| frequently | 23 | temporal |
| in the u.s. | 9 | location |
| than ores | 2 | other |
| ore → contain → copper | 115 |
| ore → include → copper | 14 |
| ore → be → copper | 7 |
| ore → contain → some copper mineral | 7 |
| ore → contain → both copper | 5 |
| ore → be mined for → copper | 5 |
| ore → contain → the copper | 4 |
| negative | neutral | positive |
| 0.071 | 0.832 | 0.097 |
| Raw frequency | 157 |
| Normalized frequency | 0.796 |
| Modifier score | 0.768 |
| Perplexity | 457.643 |