| to heat a series of coils | 11 | purpose |
| to cause a combustion reaction | 5 | purpose |
| commonly | 3 | temporal |
| furnace → use → gas | 53 |
| furnace → run on → gas | 27 |
| furnace → be → gas | 22 |
| furnace → utilize → gas | 4 |
| furnace → operate on → gas | 4 |
| negative | neutral | positive |
| 0.216 | 0.692 | 0.092 |
| Raw frequency | 110 |
| Normalized frequency | 0.778 |
| Modifier score | 0.850 |
| Perplexity | 400.209 |