| to produce energy | 2 | purpose |
| furnace → use → wood | 9 |
| furnace → be powered by → wood | 5 |
| furnace → utilize → wood | 4 |
| furnace → be fueled by → wood | 4 |
| negative | neutral | positive |
| 0.294 | 0.627 | 0.079 |
| Raw frequency | 22 |
| Normalized frequency | 0.430 |
| Modifier score | 0.500 |
| Perplexity | 259.878 |