| no longer | 5 | temporal |
| from propane | 5 | other |
| from a range of fuel sources | 5 | other |
| furnace → can → run | 11 |
| furnace → can → operate | 7 |
| furnace → be able to → run | 7 |
| furnace → be → capable | 5 |
| furnace → can → perform | 3 |
| furnace → be able to → operate | 3 |
| negative | neutral | positive |
| 0.139 | 0.528 | 0.333 |
| Raw frequency | 36 |
| Normalized frequency | 0.537 |
| Modifier score | 0.500 |
| Perplexity | 402.848 |